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131993875 = 5313431889
BaseRepresentation
bin1111101111000…
…01000100010011
3100012100222120001
413313201010103
5232242301000
621033030431
73161633536
oct767410423
9305328501
10131993875
1168563a52
1238255417
13214661b0
141375ca1d
15b8c446a
hex7de1113

131993875 has 32 divisors (see below), whose sum is σ = 181621440. Its totient is φ = 95155200.

The previous prime is 131993867. The next prime is 131993887. The reversal of 131993875 is 578399131.

It is a happy number.

It is not a de Polignac number, because 131993875 - 23 = 131993867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68931 + ... + 70819.

It is an arithmetic number, because the mean of its divisors is an integer number (5675670).

Almost surely, 2131993875 is an apocalyptic number.

131993875 is a deficient number, since it is larger than the sum of its proper divisors (49627565).

131993875 is a wasteful number, since it uses less digits than its factorization.

131993875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1950 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The square root of 131993875 is about 11488.8587335731. The cubic root of 131993875 is about 509.1564615119.

The spelling of 131993875 in words is "one hundred thirty-one million, nine hundred ninety-three thousand, eight hundred seventy-five".

Divisors: 1 5 13 25 43 65 125 215 325 559 1075 1625 1889 2795 5375 9445 13975 24557 47225 69875 81227 122785 236125 406135 613925 1055951 2030675 3069625 5279755 10153375 26398775 131993875