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131013044 = 22154321227
BaseRepresentation
bin1111100111100…
…01100110110100
3100010112011002222
413303301212310
5232014404134
621000021512
73150410141
oct763614664
9303464088
10131013044
1167a54048
1237a61898
13211b1916
14135853c8
15b77da2e
hex7cf19b4

131013044 has 12 divisors (see below), whose sum is σ = 229432224. Its totient is φ = 65460984.

The previous prime is 131013031. The next prime is 131013079. The reversal of 131013044 is 440310131.

It is a super-3 number, since 3×1310130443 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442 + ... + 16785.

It is an arithmetic number, because the mean of its divisors is an integer number (19119352).

Almost surely, 2131013044 is an apocalyptic number.

It is an amenable number.

131013044 is a deficient number, since it is larger than the sum of its proper divisors (98419180).

131013044 is a wasteful number, since it uses less digits than its factorization.

131013044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22774 (or 22772 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131013044 is about 11446.0929578612. The cubic root of 131013044 is about 507.8921640617.

Adding to 131013044 its reverse (440310131), we get a palindrome (571323175).

The spelling of 131013044 in words is "one hundred thirty-one million, thirteen thousand, forty-four".

Divisors: 1 2 4 1543 3086 6172 21227 42454 84908 32753261 65506522 131013044