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31044221007 = 3531099317761
BaseRepresentation
bin11100111010011000…
…010011100001001111
32222010112011211022020
4130322120103201033
51002034310033012
622132253221223
72146206344652
oct347230234117
988115154266
1031044221007
11121907207a8
126024791813
132c09816157
141706dc7899
15c1a642a8c
hex73a61384f

31044221007 has 16 divisors (see below), whose sum is σ = 42179492448. Its totient is φ = 20302663680.

The previous prime is 31044220967. The next prime is 31044221053. The reversal of 31044221007 is 70012244013.

It is a happy number.

It is not a de Polignac number, because 31044221007 - 212 = 31044216911 is a prime.

It is a super-3 number, since 3×310442210073 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31044221707) 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, 1739007 + ... + 1756767.

It is an arithmetic number, because the mean of its divisors is an integer number (2636218278).

Almost surely, 231044221007 is an apocalyptic number.

31044221007 is a deficient number, since it is larger than the sum of its proper divisors (11135271441).

31044221007 is a wasteful number, since it uses less digits than its factorization.

31044221007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28810.

The product of its (nonzero) digits is 1344, while the sum is 24.

The spelling of 31044221007 in words is "thirty-one billion, forty-four million, two hundred twenty-one thousand, seven".

Divisors: 1 3 53 159 10993 17761 32979 53283 582629 941333 1747887 2823999 195246673 585740019 10348073669 31044221007