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31320053401 = 7131216328297
BaseRepresentation
bin11101001010110100…
…100001011010011001
32222211202012120012211
4131022310201122121
51003120413202101
622215505235121
72156066030020
oct351264413231
988752176184
1031320053401
111231239875a
1260a1032aa1
132c51a018a0
1417318a98b7
15c3497ac51
hex74ad21699

31320053401 has 16 divisors (see below), whose sum is σ = 38552289664. Its totient is φ = 24777788544.

The previous prime is 31320053399. The next prime is 31320053407. The reversal of 31320053401 is 10435002313.

It is a cyclic number.

It is not a de Polignac number, because 31320053401 - 21 = 31320053399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31320053407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092685 + ... + 1120981.

It is an arithmetic number, because the mean of its divisors is an integer number (2409518104).

Almost surely, 231320053401 is an apocalyptic number.

It is an amenable number.

31320053401 is a deficient number, since it is larger than the sum of its proper divisors (7232236263).

31320053401 is a wasteful number, since it uses less digits than its factorization.

31320053401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40480.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 31320053401 its reverse (10435002313), we get a palindrome (41755055714).

The spelling of 31320053401 in words is "thirty-one billion, three hundred twenty million, fifty-three thousand, four hundred one".

Divisors: 1 7 13 91 12163 28297 85141 158119 198079 367861 1106833 2575027 344176411 2409234877 4474293343 31320053401