131969404 has 24 divisors (see below), whose sum is σ = 267660288. Its totient is φ = 55760880.

The previous prime is 131969399. The next prime is 131969441. The reversal of 131969404 is 404969131.

It is a congruent number.

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, 31204 + ... + 35179.

It is an arithmetic number, because the mean of its divisors is an integer number (11152512).

Almost surely, 2^131969404 is an apocalyptic number.

131969404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131969404 is an abundant number, since it is smaller than the sum of its proper divisors (135690884).

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

131969404 is a wasteful number, since it uses less digits than its factorization.

131969404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66465 (or 66463 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 131969404 is about 11487.7936959192. The cubic root of 131969404 is about 509.1249945522.

The spelling of 131969404 in words is "one hundred thirty-one million, nine hundred sixty-nine thousand, four hundred four".