131170020 has 48 divisors (see below), whose sum is σ = 371938560. Its totient is φ = 34534656.

The previous prime is 131170019. The next prime is 131170033. The reversal of 131170020 is 20071131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9097 + ... + 18576.

It is an arithmetic number, because the mean of its divisors is an integer number (7748720).

Almost surely, 2^131170020 is an apocalyptic number.

131170020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131170020 is an abundant number, since it is smaller than the sum of its proper divisors (240768540).

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

131170020 is a wasteful number, since it uses less digits than its factorization.

131170020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27764 (or 27762 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 131170020 is about 11452.9480920853. The cubic root of 131170020 is about 508.0949302824.

The spelling of 131170020 in words is "one hundred thirty-one million, one hundred seventy thousand, twenty".