131973512 has 16 divisors (see below), whose sum is σ = 269946000. Its totient is φ = 59987920.

The previous prime is 131973503. The next prime is 131973521. The reversal of 131973512 is 215379131.

It is an interprime number because it is at equal distance from previous prime (131973503) and next prime (131973521).

It is a super-2 number, since 2×131973512² = 34834015739228288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749762 + ... + 749937.

It is an arithmetic number, because the mean of its divisors is an integer number (16871625).

Almost surely, 2^131973512 is an apocalyptic number.

It is an amenable number.

131973512 is an abundant number, since it is smaller than the sum of its proper divisors (137972488).

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

131973512 is a wasteful number, since it uses less digits than its factorization.

131973512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499716 (or 1499712 counting only the distinct ones).

The product of its digits is 5670, while the sum is 32.

The square root of 131973512 is about 11487.9724930033. The cubic root of 131973512 is about 509.1302772509.

The spelling of 131973512 in words is "one hundred thirty-one million, nine hundred seventy-three thousand, five hundred twelve".