131155660 has 24 divisors (see below), whose sum is σ = 287402976. Its totient is φ = 50181120.

The previous prime is 131155657. The next prime is 131155681. The reversal of 131155660 is 66551131.

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, 142101 + ... + 143020.

It is an arithmetic number, because the mean of its divisors is an integer number (11975124).

Almost surely, 2^131155660 is an apocalyptic number.

131155660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131155660 is an abundant number, since it is smaller than the sum of its proper divisors (156247316).

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

131155660 is a wasteful number, since it uses less digits than its factorization.

131155660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285153 (or 285151 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 131155660 is about 11452.3211621051. The cubic root of 131155660 is about 508.0763881657.

The spelling of 131155660 in words is "one hundred thirty-one million, one hundred fifty-five thousand, six hundred sixty".