Properties of the Number -31185

Thirty-One Thousand One Hundred Eighty-Five

Basics

Value: -31186 → -31185 → -31184

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 5 × 7 × 11

Divisors: 1, 3, 5, 7, 9, 11, 15, 21, 27, 33

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111100111010001

Octal: -74721

Duodecimal: -16069

Hexadecimal: -79d1

Square: 972504225

Square Root: 176.59275183313724

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

Triangle T, read by rows, such that column k equals column 0 of T^k+1, where column 0 of T allows the n-th row sums to be zero for n>0 and where T^k is the k-th power of T as a lower triangular matrix. A101897

Column 2 of triangular matrix A101897, in which column k equals column 0 of A101897^k+1 and where the n-th row sums are zero for n>0. A101899

a(n) is the number of partitions of n (the partition numbers). A41

Number of ways to partition 2n+1 into positive integers. A58695

Number of partitions of n with at least one odd part. A86543

Number of non-biquanimous integer partitions of n. A371795

Highly composite odd numbers: odd numbers where d(n) increases to a record. A53624

Partition numbers of the form 3·k. A87183

Odd bi-unitary abundant numbers: odd numbers k such that bsigma(k) > 2·k, where bsigma is the sum of the bi-unitary divisors function (A188999). A293186

List giving least odd integer of each prime signature. A147516