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131030372 = 22112977963
BaseRepresentation
bin1111100111101…
…01110101100100
3100010120000212202
413303311311210
5232020432442
621000234032
73150511514
oct763656544
9303500782
10131030372
1167a66070
1237a6b918
13211b9785
141358b844
15b783c32
hex7cf5d64

131030372 has 12 divisors (see below), whose sum is σ = 250148976. Its totient is φ = 59559240.

The previous prime is 131030329. The next prime is 131030387. The reversal of 131030372 is 273030131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488938 + ... + 1489025.

It is an arithmetic number, because the mean of its divisors is an integer number (20845748).

Almost surely, 2131030372 is an apocalyptic number.

It is an amenable number.

131030372 is a deficient number, since it is larger than the sum of its proper divisors (119118604).

131030372 is a wasteful number, since it uses less digits than its factorization.

131030372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977978 (or 2977976 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 131030372 is about 11446.8498723448. The cubic root of 131030372 is about 507.9145546247.

The spelling of 131030372 in words is "one hundred thirty-one million, thirty thousand, three hundred seventy-two".

Divisors: 1 2 4 11 22 44 2977963 5955926 11911852 32757593 65515186 131030372