Properties of the Number 31181

Thirty-One Thousand One Hundred Eighty-One

Basics

Value: 31180 → 31181 → 31182

Parity: odd

Prime: Yes

Previous Prime: 31177

Next Prime: 31183

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 31181

Divisors: 1, 31181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111001101

Octal: 74715

Duodecimal: 16065

Hexadecimal: 79cd

Square: 972254761

Square Root: 176.58142597679972

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

Partial sums of A299256. A299262

Number of partitions of n minus number of divisors of n. A144300

Irregular triangle read by rows where T(n,k) is the number of integer compositions of n with k weak excedances (parts on or above the diagonal), all zeros removed. A352525

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2,6,4]; short d-string notation of pattern = [264]. A78848

Number of integer partitions of n whose run-sums are not all equal. A382076

Home primes whose homeliness is 4. A133962

Primes which satisfy the requirements of A380943 in more than one way. A383810

Primes which satisfy the requirements of A380943 in exactly two ways. A383811

Number of signed permutations of length n+2 with adjacent elements differing by more than 1 whose first element is 1 and whose last element has absolute value n+2. A370768

Members of A083989 whose 10's complement is also a member of A083989. A83991