131570020 has 24 divisors (see below), whose sum is σ = 276623424. Its totient is φ = 52565856.

The previous prime is 131569993. The next prime is 131570027. The reversal of 131570020 is 20075131.

It is a self number, because there is not a number n which added to its sum of digits gives 131570020.

It is not an unprimeable number, because it can be changed into a prime (131570027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15939 + ... + 22741.

It is an arithmetic number, because the mean of its divisors is an integer number (11525976).

Almost surely, 2^131570020 is an apocalyptic number.

131570020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131570020 is an abundant number, since it is smaller than the sum of its proper divisors (145053404).

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

131570020 is a wasteful number, since it uses less digits than its factorization.

131570020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779 (or 7777 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 131570020 is about 11470.3975519596. The cubic root of 131570020 is about 508.6108808316.

The spelling of 131570020 in words is "one hundred thirty-one million, five hundred seventy thousand, twenty".