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31001554055 = 5151257159773
BaseRepresentation
bin11100110111110101…
…100010110010000111
32222000112220010020202
4130313311202302013
51001442344212210
622124130521115
72145150601343
oct346765426207
988015803222
1031001554055
111216962945a
12601243619b
132c00a27734
14170147c623
15c16a159a5
hex737d62c87

31001554055 has 16 divisors (see below), whose sum is σ = 37594183104. Its totient is φ = 24540979200.

The previous prime is 31001554033. The next prime is 31001554069. The reversal of 31001554055 is 55045510013.

It is not a de Polignac number, because 31001554055 - 210 = 31001553031 is a prime.

It is a super-2 number, since 2×310015540552 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114149 + ... + 273921.

It is an arithmetic number, because the mean of its divisors is an integer number (2349636444).

Almost surely, 231001554055 is an apocalyptic number.

31001554055 is a deficient number, since it is larger than the sum of its proper divisors (6592629049).

31001554055 is a wasteful number, since it uses less digits than its factorization.

31001554055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160186.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 31001554055 in words is "thirty-one billion, one million, five hundred fifty-four thousand, fifty-five".

Divisors: 1 5 151 257 755 1285 38807 159773 194035 798865 24125723 41061661 120628615 205308305 6200310811 31001554055