131252920 has 64 divisors (see below), whose sum is σ = 314344800. Its totient is φ = 49152000.

The previous prime is 131252911. The next prime is 131252921. The reversal of 131252920 is 29252131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131252921) 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, 170296 + ... + 171064.

Almost surely, 2^131252920 is an apocalyptic number.

131252920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131252920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157172400).

131252920 is an abundant number, since it is smaller than the sum of its proper divisors (183091880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131252920 is a wasteful number, since it uses less digits than its factorization.

131252920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 131252920 is about 11456.5666759287. The cubic root of 131252920 is about 508.2019471126.

The spelling of 131252920 in words is "one hundred thirty-one million, two hundred fifty-two thousand, nine hundred twenty".