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Properties of the Number 31124

Thirty-One Thousand One Hundred Twenty-Four

Basics

Value: 31123 → 31124 → 31125

Parity: even

Prime: No

Previous Prime: 31123

Next Prime: 31139

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 2 × 31 × 251

Divisors: 1, 2, 4, 31, 62, 124, 251, 502, 1004, 7781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100110010100

Octal: 74624

Duodecimal: 16018

Hexadecimal: 7994

Square: 968703376

Square Root: 176.41995352000293

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) is the concatenation of n and 4n. A19552
Sum of the fifth largest parts in the partitions of n into 8 parts. A308994
Character of extremal vertex operator algebra of rank 15.5. A28525
Even composite integers m such that U(m)2 == 1 (mod m) and V(m) == 3 (mod m), where U(m)=A001906(m) and V(m)=A005248(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=3 and b=1, respectively. A337777
Numbers k such that k divides the (k+1)st Lucas number. A94397
Even composite integers m such that U(m)2 == 1 (mod m) and V(m) == 7 (mod m), where U(m)=A004187(m) and V(m)=A056854(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=7 and b=1, respectively. A337782
The lexicographically earliest "Increasing Term Fractal Jump Sequence" that does not use the digit 0 in any terms. A359385
Numbers whose set of base-13 digits is {1,2}. A32933
Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros. A362446
Number of partitions of n with equal number of parts congruent to each of 0 and 2 (mod 5). A35553