131973588 has 36 divisors (see below), whose sum is σ = 341740308. Its totient is φ = 42917760.

The previous prime is 131973571. The next prime is 131973613. The reversal of 131973588 is 885379131.

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 104284944 = 5262^2 + 10212^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×131973588³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43231 + ... + 46182.

Almost surely, 2^131973588 is an apocalyptic number.

131973588 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

131973588 is an abundant number, since it is smaller than the sum of its proper divisors (209766720).

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

131973588 is a wasteful number, since it uses less digits than its factorization.

131973588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89464 (or 89459 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 131973588 is about 11487.9758008102. The cubic root of 131973588 is about 509.1303749823.

The spelling of 131973588 in words is "one hundred thirty-one million, nine hundred seventy-three thousand, five hundred eighty-eight".