Properties of the Number 30919

Thirty Thousand Nine Hundred Nineteen

Basics

Value: 30918 → 30919 → 30920

Parity: odd

Prime: No

Previous Prime: 30911

Next Prime: 30931

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 ² × 631

Divisors: 1, 7, 49, 631, 4417, 30919

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111100011000111

Octal: 74307

Duodecimal: 15A87

Hexadecimal: 78c7

Square: 955984561

Square Root: 175.8379936191266

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

a(n) = 997·n + 1009. A100776

Triangle read by rows: T(n,k) (0 <= k <= n) = numerator of Integral_x=0..n binomial(x,k). A241186

Numbers that can be written as a² + 3·b² for some a, b in A155716 and also as c² + 6·d² for some c, d in A092572. A380295

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, 0, 1), (1, -1, 0), (1, 1, 0), (1, 1, 1)}. A151231

Triangle read by rows, derived from an array of sequences generated from (1 + x)/ (1 - r·x - r·x²). A180165

Triangle read by rows: T(n,k) (0 <= k <= n) = denominator of Integral_x=0..n binomial(x,k). A241187

Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A258524

[ exp(5/14)*n! ]. A30919

First occurrence of the n-th prime in A075019. A320223