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132801931 = 2343472857
BaseRepresentation
bin1111110101001…
…10010110001011
3100020220001000001
413322212112023
5232444130211
621102223431
73201540433
oct772462613
9306801001
10132801931
1168a66069
1238584b77
1321689c32
14138cd2c3
15b9d3ac1
hex7ea658b

132801931 has 16 divisors (see below), whose sum is σ = 144866304. Its totient is φ = 121391424.

The previous prime is 132801913. The next prime is 132801953. The reversal of 132801931 is 139108231.

It is not a de Polignac number, because 132801931 - 211 = 132799883 is a prime.

It is a super-2 number, since 2×1328019312 = 35272705754657522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132801931.

It is not an unprimeable number, because it can be changed into a prime (132801961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45055 + ... + 47911.

It is an arithmetic number, because the mean of its divisors is an integer number (9054144).

Almost surely, 2132801931 is an apocalyptic number.

132801931 is a deficient number, since it is larger than the sum of its proper divisors (12064373).

132801931 is a wasteful number, since it uses less digits than its factorization.

132801931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 132801931 is about 11523.9720148914. The cubic root of 132801931 is about 510.1933535727.

The spelling of 132801931 in words is "one hundred thirty-two million, eight hundred one thousand, nine hundred thirty-one".

Divisors: 1 23 43 47 989 1081 2021 2857 46483 65711 122851 134279 2825573 3088417 5773997 132801931