Properties of the Number 31001

Thirty-One Thousand One

Basics

Value: 31000 → 31001 → 31002

Parity: odd

Prime: No

Previous Prime: 30983

Next Prime: 31013

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 29 × 1069

Divisors: 1, 29, 1069, 31001

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111100100011001

Octal: 74431

Duodecimal: 15B35

Hexadecimal: 7919

Square: 961062001

Square Root: 176.07100840286

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

Irregular triangle read by rows: row n lists all of the distinct derivable strings in the MIU formal system that are n characters long. A369173

Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171), with the last leaf implicit, i.e., these words are given without the last trailing zero, except for the null tree which is encoded as 0. A71153

A239461(n) / n². A239464

a(n) = 32·n² - 56·n + 25. A272129

Greater of number pair whose squares are reversals of each other, with no leading zeros allowed. A106324

Number of partitions of n+6 with largest inscribed rectangle having area <= n. A218627

Sequence A261220 shown in factorial base: a(n) = A007623(A261220(n)). A260743

Non-Brauer numbers. A349044

Recurrence a(1) = 1, a(2) = 5; a(n) = (a(n-1) + a(n-2))/GCD(a(n-1),a(n-2)) + 1. A349576

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 12. A31690