Properties of the Number 30213

Thirty Thousand Two Hundred Thirteen

Basics

Value: 30212 → 30213 → 30214

Parity: odd

Prime: No

Previous Prime: 30211

Next Prime: 30223

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 373

Divisors: 1, 3, 9, 27, 81, 373, 1119, 3357, 10071, 30213

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011000000101

Octal: 73005

Duodecimal: 15599

Hexadecimal: 7605

Square: 912825369

Square Root: 173.8188712424517

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

One of the three sequences associated with the polynomial x³ - 2. A52101

G.f. A(x) satisfies: A(x)³ + A(-x)³ = 2 and A(x)^-3 - A(-x)^-3 = -18·x. A196864

Union of A052103, A052102 and A052101, uniqued and sorted. A140495

Constant term of the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192954

Numbers k in A228058 such that also A001065(k) is in A228058. A325380

Expansion of e.g.f.: exp(x)*sec(2·x). A117437

1/4 the number of n X n 0..3 symmetric matrices with every element equal to zero or one horizontal and vertical neighbors. A211077

E.g.f. (exp(x) - 1)/cos(2·x). A380056

Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,0,2,1. A37771

Expansion of η(q⁵)*η(q¹⁹). A30213