131685412 has 12 divisors (see below), whose sum is σ = 231069916. Its totient is φ = 65665440.

The previous prime is 131685401. The next prime is 131685461. The reversal of 131685412 is 214586131.

It can be written as a sum of positive squares in 2 ways, for example, as 28987456 + 102697956 = 5384^2 + 10134^2 .

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, 42639 + ... + 45622.

Almost surely, 2^131685412 is an apocalyptic number.

It is an amenable number.

131685412 is a deficient number, since it is larger than the sum of its proper divisors (99384504).

131685412 is a wasteful number, since it uses less digits than its factorization.

131685412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88638 (or 88636 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 131685412 is about 11475.4264408779. The cubic root of 131685412 is about 508.7595278598.

The spelling of 131685412 in words is "one hundred thirty-one million, six hundred eighty-five thousand, four hundred twelve".