131252745 has 16 divisors (see below), whose sum is σ = 226158912. Its totient is φ = 64616640.

The previous prime is 131252711. The next prime is 131252747. The reversal of 131252745 is 547252131.

It is not a de Polignac number, because 131252745 - 2⁸ = 131252489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131252747) 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, 336351 + ... + 336740.

It is an arithmetic number, because the mean of its divisors is an integer number (14134932).

Almost surely, 2^131252745 is an apocalyptic number.

131252745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131252745 is a deficient number, since it is larger than the sum of its proper divisors (94906167).

131252745 is a wasteful number, since it uses less digits than its factorization.

131252745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673112.

The product of its digits is 8400, while the sum is 30.

The square root of 131252745 is about 11456.5590383850. The cubic root of 131252745 is about 508.2017212500.

The spelling of 131252745 in words is "one hundred thirty-one million, two hundred fifty-two thousand, seven hundred forty-five".