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31016190957 = 3171933079679
BaseRepresentation
bin11100111000101101…
…011000001111101101
32222001120102202022020
4130320231120033231
51002010121102312
622125412340353
72145416162463
oct347055301755
988046382266
1031016190957
1112176916374
1260173146b9
132c03a80a1b
1417033ac833
15c17e5778c
hex738b583ed

31016190957 has 32 divisors (see below), whose sum is σ = 46110873600. Its totient is φ = 18429389568.

The previous prime is 31016190937. The next prime is 31016190973. The reversal of 31016190957 is 75909161013.

It is not a de Polignac number, because 31016190957 - 215 = 31016158189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31016190937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3199644 + ... + 3209322.

It is an arithmetic number, because the mean of its divisors is an integer number (1440964800).

Almost surely, 231016190957 is an apocalyptic number.

It is an amenable number.

31016190957 is a deficient number, since it is larger than the sum of its proper divisors (15094682643).

31016190957 is a wasteful number, since it uses less digits than its factorization.

31016190957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13025.

The product of its (nonzero) digits is 51030, while the sum is 42.

The spelling of 31016190957 in words is "thirty-one billion, sixteen million, one hundred ninety thousand, nine hundred fifty-seven".

Divisors: 1 3 17 19 51 57 323 969 3307 9679 9921 29037 56219 62833 164543 168657 183901 188499 493629 551703 1068161 3126317 3204483 9378951 32008453 96025359 544143701 608160607 1632431103 1824481821 10338730319 31016190957