131386720 has 24 divisors (see below), whose sum is σ = 310401504. Its totient is φ = 52554624.

The previous prime is 131386681. The next prime is 131386721. The reversal of 131386720 is 27683131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131386721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410424 + ... + 410743.

It is an arithmetic number, because the mean of its divisors is an integer number (12933396).

Almost surely, 2^131386720 is an apocalyptic number.

131386720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131386720 is an abundant number, since it is smaller than the sum of its proper divisors (179014784).

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

131386720 is an equidigital number, since it uses as much as digits as its factorization.

131386720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821182 (or 821174 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 131386720 is about 11462.4046342816. The cubic root of 131386720 is about 508.3745764859.

The spelling of 131386720 in words is "one hundred thirty-one million, three hundred eighty-six thousand, seven hundred twenty".