Properties of the Number 31460

Thirty-One Thousand Four Hundred Sixty

Basics

Value: 31459 → 31460 → 31461

Parity: even

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 11 ² × 13

Divisors: 1, 2, 4, 5, 10, 11, 13, 20, 22, 26

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111101011100100

Octal: 75344

Duodecimal: 16258

Hexadecimal: 7ae4

Square: 989731600

Square Root: 177.36967046256808

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

Number of n-element sets of singletons or pairs of distinct elements of {1..n}, or loop graphs with n edges, such that it is not possible to choose a different element from each. A368596

Expansion of x²*(2+x)/(1-3·x-4·x²-x³). A120757

Numbers k such that sopfr(k) = sopfr(k - sopfr(k)). A50781

Number of returns to the x-axis from above (i.e., d steps hitting the x-axis) in all Grand Motzkin paths of length n. A109196

Triangle read by rows, Lah numbers of order 2, T(n,n) = 1, T(n,k) = 0 if k<0 or k>n, otherwise T(n,k) = T(n-1,k-1)+((n-1)²+k²)*T(n-1,k), for n>=0 and 0<=k<=n. A268434

G.f. A(x) satisfies A(x) = 1 + x + x⁴*A(x)². A366554

a(n) = (5·n + 9)*binomial(n+8, 8)/9. A55844

Eighth column of (1,5)-Pascal triangle A096940. A96945

Numbers k for which there are no prime numbers in the range (k-4·sqrt(sqrt(k)), k]. A192320

Row sums of A118354. A151616