131571980 has 24 divisors (see below), whose sum is σ = 276665760. Its totient is φ = 52559360.

The previous prime is 131571949. The next prime is 131571989. The reversal of 131571980 is 89175131.

It is a super-2 number, since 2×131571980² = 34622371842240800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131571980.

It is not an unprimeable number, because it can be changed into a prime (131571989) 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, 12860 + ... + 20700.

It is an arithmetic number, because the mean of its divisors is an integer number (11527740).

Almost surely, 2^131571980 is an apocalyptic number.

131571980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131571980 is an abundant number, since it is smaller than the sum of its proper divisors (145093780).

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

131571980 is a wasteful number, since it uses less digits than its factorization.

131571980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689 (or 8687 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 131571980 is about 11470.4829889591. The cubic root of 131571980 is about 508.6134064129.

The spelling of 131571980 in words is "one hundred thirty-one million, five hundred seventy-one thousand, nine hundred eighty".