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31352353427 = 41612205507
BaseRepresentation
bin11101001100101111…
…101111001010010011
32222220222222120112002
4131030233233022103
51003202200302202
622223021424215
72156640415133
oct351457571223
988828876462
1031352353427
111232964a19a
1260aba0b06b
132c58600725
141735cb6ac3
15c3770b302
hex74cbef293

31352353427 has 12 divisors (see below), whose sum is σ = 32652344088. Its totient is φ = 30086078400.

The previous prime is 31352353393. The next prime is 31352353429. The reversal of 31352353427 is 72435325313.

It is not a de Polignac number, because 31352353427 - 28 = 31352353171 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31352353429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49808 + ... + 255314.

It is an arithmetic number, because the mean of its divisors is an integer number (2721028674).

Almost surely, 231352353427 is an apocalyptic number.

31352353427 is a deficient number, since it is larger than the sum of its proper divisors (1299990661).

31352353427 is an equidigital number, since it uses as much as digits as its factorization.

31352353427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205670 (or 205609 counting only the distinct ones).

The product of its digits is 226800, while the sum is 38.

The spelling of 31352353427 in words is "thirty-one billion, three hundred fifty-two million, three hundred fifty-three thousand, four hundred twenty-seven".

Divisors: 1 41 61 2501 3721 152561 205507 8425787 12535927 513973007 764691547 31352353427