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32131000109 = 1322923927431
BaseRepresentation
bin11101111011001010…
…000010011100101101
310001221021010220222002
4131323022002130231
51011301014000414
622432154502045
72215143665105
oct357312023455
9101837126862
1032131000109
1112699125a4a
126288734925
133050a18200
1417ab484205
15c80c664de
hex77b28272d

32131000109 has 24 divisors (see below), whose sum is σ = 36144403200. Its totient is φ = 28515789120.

The previous prime is 32131000091. The next prime is 32131000163. The reversal of 32131000109 is 90100013123.

It is a de Polignac number, because none of the positive numbers 2k-32131000109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1157624 + ... + 1185054.

It is an arithmetic number, because the mean of its divisors is an integer number (1506016800).

Almost surely, 232131000109 is an apocalyptic number.

It is an amenable number.

32131000109 is a deficient number, since it is larger than the sum of its proper divisors (4013403091).

32131000109 is a wasteful number, since it uses less digits than its factorization.

32131000109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27725 (or 27712 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 32131000109 in words is "thirty-two billion, one hundred thirty-one million, one hundred nine", and thus it is an aban number.

Divisors: 1 13 29 169 239 377 3107 4901 6931 27431 40391 90103 356603 795499 1171339 4635839 6556009 10341487 85228117 134439331 190124261 1107965521 2471615393 32131000109