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31190712427 = 78950065349
BaseRepresentation
bin11101000011000111…
…001000000001101011
32222111201211100202101
4131003013020001223
51002334310244202
622155005114231
72152635452440
oct350307100153
988451740671
1031190712427
1112256386996
126065858977
132c30c87074
14171c63b9c7
15c2842c887
hex7431c806b

31190712427 has 8 divisors (see below), whose sum is σ = 36047052000. Its totient is φ = 26434503744.

The previous prime is 31190712389. The next prime is 31190712431. The reversal of 31190712427 is 72421709113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31190712427 - 211 = 31190710379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31190712457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25032052 + ... + 25033297.

It is an arithmetic number, because the mean of its divisors is an integer number (4505881500).

Almost surely, 231190712427 is an apocalyptic number.

31190712427 is a deficient number, since it is larger than the sum of its proper divisors (4856339573).

31190712427 is an equidigital number, since it uses as much as digits as its factorization.

31190712427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50065445.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 31190712427 in words is "thirty-one billion, one hundred ninety million, seven hundred twelve thousand, four hundred twenty-seven".

Divisors: 1 7 89 623 50065349 350457443 4455816061 31190712427