131295720 has 32 divisors (see below), whose sum is σ = 393887520. Its totient is φ = 35012160.

The previous prime is 131295713. The next prime is 131295751. The reversal of 131295720 is 27592131.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 546946 + ... + 547185.

It is an arithmetic number, because the mean of its divisors is an integer number (12308985).

Almost surely, 2^131295720 is an apocalyptic number.

131295720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131295720 is an abundant number, since it is smaller than the sum of its proper divisors (262591800).

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

131295720 is a wasteful number, since it uses less digits than its factorization.

131295720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094145 (or 1094141 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 131295720 is about 11458.4344480387. The cubic root of 131295720 is about 508.2571806254.

The spelling of 131295720 in words is "one hundred thirty-one million, two hundred ninety-five thousand, seven hundred twenty".