Properties of the Number 7131

Seven Thousand One Hundred Thirty-One

Basics

Value: 7130 → 7131 → 7132

Parity: odd

Prime: No

Previous Prime: 7129

Next Prime: 7151

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 2377

Divisors: 1, 3, 2377, 7131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111011011

Octal: 15733

Duodecimal: 4163

Hexadecimal: 1bdb

Square: 50851161

Square Root: 84.44524853418338

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 that can be partitioned into a set of sets. A382077

Number of 4-line partitions of n (i.e., planar partitions of n with at most 4 lines). A2799

Numbers for which the digital sum contains the same distinct digits as the digital product. A249334

T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having a sum of three or less, with rows and columns of the latter in lexicographically nondecreasing order. A227269

Start with 1015 and repeatedly reverse the digits and add 4 to get the next term. A117807

Odd numbers which are factored to the same set of primes in Z as to the irreducible polynomials in GF(2)[X]; odd terms of A235036. A235039

Numbers n for which the digital sum contains the same distinct digits as the digital product but the digital sum is not equal to the digital product. A249335

Convolution of A008619 and A001400. A139672

a(n) is the nearest integer to sqrt(π(10ⁿ)) (see A006880). A221205

Cycle of 2 steps possible for 'concatenate a(n) and nextprime(a(n)) is a prime'. A34592