Properties of the Number 30930

Thirty Thousand Nine Hundred Thirty

Basics

Value: 30929 → 30930 → 30931

Parity: even

Prime: No

Previous Prime: 30911

Next Prime: 30931

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 1031

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 1031, 2062

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100011010010

Octal: 74322

Duodecimal: 15A96

Hexadecimal: 78d2

Square: 956664900

Square Root: 175.86926962946086

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 T(n,k) of solid standard Young tableaux of n cells and height = k; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A214753

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,51. A64262

Numerators of coefficients of e² in the table of (2n)th du Bois Reymond constants. A85467

a(n) = -A085466(n) times the free coefficient of the 2n-th Du Bois-Reymond polynomial in e². A138729

Numbers k such that in base 2 the k-th composite is a substring of the k-th prime. A378479

Number of 3-vexillary permutations in S_n, that is, permutations whose Stanley symmetric function has at most 3 terms or at most 3 Edelman-Greene tableaux. A223034

Number of solid standard Young tableaux of n cells and height two. A273582

Numbers k such that there is no prime p and index j > k such that A002182(j) = p·A002182(k). A309042

[ exp(4/13)*n! ]. A30930

Triangle read by rows: expansion of p(x,n)=If[n == 0, 1, (x + 1)ⁿ + 2ⁿ⁺¹*Sum[Binomial[n-m, m]*x^m*(1 + x^{n - 2·m}), {m, 1, n - 1}]]. A146774