131571916 has 24 divisors (see below), whose sum is σ = 269265920. Its totient is φ = 55076112.

The previous prime is 131571907. The next prime is 131571929. The reversal of 131571916 is 619175131.

It is a super-2 number, since 2×131571916² = 34622338159822112, which contains 22 as substring.

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, 53436 + ... + 55843.

Almost surely, 2^131571916 is an apocalyptic number.

It is an amenable number.

131571916 is an abundant number, since it is smaller than the sum of its proper divisors (137694004).

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

131571916 is a wasteful number, since it uses less digits than its factorization.

131571916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109333 (or 109331 counting only the distinct ones).

The product of its digits is 5670, while the sum is 34.

The square root of 131571916 is about 11470.4801991896. The cubic root of 131571916 is about 508.6133239454.

The spelling of 131571916 in words is "one hundred thirty-one million, five hundred seventy-one thousand, nine hundred sixteen".