131020080 has 40 divisors (see below), whose sum is σ = 406162992. Its totient is φ = 34938624.

The previous prime is 131020073. The next prime is 131020093. The reversal of 131020080 is 80020131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×131020080² = 34332522726412800, which contains 22 as substring.

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

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, 272719 + ... + 273198.

Almost surely, 2^131020080 is an apocalyptic number.

131020080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020080 is an abundant number, since it is smaller than the sum of its proper divisors (275142912).

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

131020080 is a wasteful number, since it uses less digits than its factorization.

131020080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545933 (or 545927 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 131020080 is about 11446.4003075203. The cubic root of 131020080 is about 507.9012559434.

The spelling of 131020080 in words is "one hundred thirty-one million, twenty thousand, eighty".