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31005058075 = 5210321120163
BaseRepresentation
bin11100111000000010…
…111010010000011011
32222000210111010212021
4130320002322100123
51001444243324300
622124333555311
72145222434215
oct347002722033
988023433767
1031005058075
1112170602042
126013645b37
132c01683614
141701b115b5
15c16ea8d1a
hex7380ba41b

31005058075 has 12 divisors (see below), whose sum is σ = 38450317048. Its totient is φ = 24801436800.

The previous prime is 31005058061. The next prime is 31005058157. The reversal of 31005058075 is 57085050013.

It is not a de Polignac number, because 31005058075 - 217 = 31004927003 is a prime.

It is a super-2 number, since 2×310050580752 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31005058075.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197944 + ... + 318106.

Almost surely, 231005058075 is an apocalyptic number.

31005058075 is a deficient number, since it is larger than the sum of its proper divisors (7445258973).

31005058075 is a wasteful number, since it uses less digits than its factorization.

31005058075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130494 (or 130489 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 31005058075 in words is "thirty-one billion, five million, fifty-eight thousand, seventy-five".

Divisors: 1 5 25 10321 51605 120163 258025 600815 3004075 1240202323 6201011615 31005058075