Properties of the Number 31225

Thirty-One Thousand Two Hundred Twenty-Five

Basics

Value: 31224 → 31225 → 31226

Parity: odd

Prime: No

Previous Prime: 31223

Next Prime: 31231

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 1249

Divisors: 1, 5, 25, 1249, 6245, 31225

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111111001

Octal: 74771

Duodecimal: 160A1

Hexadecimal: 79f9

Square: 975000625

Square Root: 176.70597047072292

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 integer partitions of n having a unique mode. A362608

Stella octangula numbers: a(n) = n*(2·n² - 1). A7588

Numbers n such that the decimal number concat(9,n) is a square. A273364

Start with the square tile of the Shield tiling and recursively apply the substitution rule. a(n) is the number of squares after n iterations. A298683

Triangle read by rows: T(n,k) = number of rooted maps with n edges on a nonorientable surface of genus k (1 <= k <= n). A267180

Terms k of A228058 such that gcd(k - A048250(k), A162296(k) - k) = A162296(k) - k. A325376

Position of first occurrence of n in A331410. A329662

Small rhombicuboctahedron with faces of centered polygons. A193250

Number of rooted n-edge maps on a non-orientable genus-3 surface. A118451

Numbers whose squares have 2R-1 digits, such that the number represented by leftmost R digits and number represented by rightmost R digits divide each other evenly. A216233