Properties of the Number 31121

Thirty-One Thousand One Hundred Twenty-One

Basics

Value: 31120 → 31121 → 31122

Parity: odd

Prime: Yes

Previous Prime: 31091

Next Prime: 31123

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 31121

Divisors: 1, 31121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100110010001

Octal: 74621

Duodecimal: 16015

Hexadecimal: 7991

Square: 968516641

Square Root: 176.41145087550296

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

Primes whose product of digits is 6. A107692

Primes that are palindromic in base 5. A29973

Unique representation of nonnegative numbers by iterated tribonacci A, B and C sequences. A316713

Primes p such that reversal(p) - 13 is a square. A176371

Indices of the start of 10 successive distinct digits in the decimal expansion of π. A258157

Primes of the form x³ + y³ - 1, where·and y are primes. A217718

Numbers that eventually reach 1 under "x -> sum of 4th power of digits of x". A219111

Primes of the form 2·n²+86·n+41. A243958

a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers. A351685

Emirps p such that p == 1 (mod s) and R(p) == 1 (mod s), where R(p) is the digit reversal of p and s the sum of digits of p. A356947