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131253245 = 5373072311
BaseRepresentation
bin1111101001011…
…00001111111101
3100010222100121022
413310230033331
5232100100440
621005113525
73152430344
oct764541775
9303870538
10131253245
11680a8562
1237b588a5
1321267056
1413608b5b
15b7c9cb5
hex7d2c3fd

131253245 has 16 divisors (see below), whose sum is σ = 162357888. Its totient is φ = 101787840.

The previous prime is 131253233. The next prime is 131253247. The reversal of 131253245 is 542352131.

It is a happy number.

It is not a de Polignac number, because 131253245 - 26 = 131253181 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 (131253247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55640 + ... + 57950.

It is an arithmetic number, because the mean of its divisors is an integer number (10147368).

Almost surely, 2131253245 is an apocalyptic number.

It is an amenable number.

131253245 is a deficient number, since it is larger than the sum of its proper divisors (31104643).

131253245 is a wasteful number, since it uses less digits than its factorization.

131253245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660.

The product of its digits is 3600, while the sum is 26.

The square root of 131253245 is about 11456.5808599250. The cubic root of 131253245 is about 508.2023665712.

The spelling of 131253245 in words is "one hundred thirty-one million, two hundred fifty-three thousand, two hundred forty-five".

Divisors: 1 5 37 185 307 1535 2311 11359 11555 56795 85507 427535 709477 3547385 26250649 131253245