131975664 has 40 divisors (see below), whose sum is σ = 341479632. Its totient is φ = 43921920.

The previous prime is 131975663. The next prime is 131975693. The reversal of 131975664 is 466579131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131975663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34722 + ... + 38334.

Almost surely, 2^131975664 is an apocalyptic number.

It is an amenable number.

131975664 is an abundant number, since it is smaller than the sum of its proper divisors (209503968).

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

131975664 is a wasteful number, since it uses less digits than its factorization.

131975664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385 (or 4379 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 131975664 is about 11488.0661557984. The cubic root of 131975664 is about 509.1330445799.

The spelling of 131975664 in words is "one hundred thirty-one million, nine hundred seventy-five thousand, six hundred sixty-four".