Properties of the Number 31428

Thirty-One Thousand Four Hundred Twenty-Eight

Basics

Value: 31427 → 31428 → 31429

Parity: even

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁴ × 97

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101011000100

Octal: 75304

Duodecimal: 16230

Hexadecimal: 7ac4

Square: 987719184

Square Root: 177.2794404323299

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

Smallest number at distance n from nearest prime. A51652

Lonely numbers: distance to closest prime sets a new record. A51650

T(n,k) is the number of n X k binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it. A183322

Expansion of ∏_n>=1 (1 + (9·x)ⁿ)^1/3. A303074

Number of integer partitions of n - 1 containing fewer 1's than any other part. A364159

Smallest number at distance 2n+1 from nearest prime. A51729

a(n) is the smallest number for which the prime distance A051699 is equal to n. A77019

Like 4-white numbers but with blocks of 4 starting at left. A277397

Numbers k such that the powerful part of the sum of divisors of k (A387726) is greater than or equal to k, and σ(k) is not itself a powerful number. A387729

Determinants of 3 X 3 matrices of discrete blocks of 9 consecutive primes. A117329