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131487395 = 5132022883
BaseRepresentation
bin1111101011001…
…01011010100011
3100011102020210112
413311211122203
5232130044040
621014121535
73154424114
oct765453243
9304366715
10131487395
1168248476
12380502ab
13213197c0
141366a20b
15b824365
hex7d656a3

131487395 has 8 divisors (see below), whose sum is σ = 169922256. Its totient is φ = 97098336.

The previous prime is 131487383. The next prime is 131487403. The reversal of 131487395 is 593784131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131487395 - 218 = 131225251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011377 + ... + 1011506.

It is an arithmetic number, because the mean of its divisors is an integer number (21240282).

Almost surely, 2131487395 is an apocalyptic number.

131487395 is a deficient number, since it is larger than the sum of its proper divisors (38434861).

131487395 is a wasteful number, since it uses less digits than its factorization.

131487395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022901.

The product of its digits is 90720, while the sum is 41.

The square root of 131487395 is about 11466.7953238906. The cubic root of 131487395 is about 508.5043905789.

Adding to 131487395 its sum of digits (41), we get a triangular number (131487436 = T16216).

The spelling of 131487395 in words is "one hundred thirty-one million, four hundred eighty-seven thousand, three hundred ninety-five".

Divisors: 1 5 13 65 2022883 10114415 26297479 131487395