131158812 has 12 divisors (see below), whose sum is σ = 306037256. Its totient is φ = 43719600.

The previous prime is 131158801. The next prime is 131158823. The reversal of 131158812 is 218851131.

It is an interprime number because it is at equal distance from previous prime (131158801) and next prime (131158823).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 131158812.

It is a congruent number.

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, 5464939 + ... + 5464962.

Almost surely, 2^131158812 is an apocalyptic number.

131158812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131158812 is an abundant number, since it is smaller than the sum of its proper divisors (174878444).

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

131158812 is a wasteful number, since it uses less digits than its factorization.

131158812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10929908 (or 10929906 counting only the distinct ones).

The product of its digits is 1920, while the sum is 30.

The square root of 131158812 is about 11452.4587753024. The cubic root of 131158812 is about 508.0804582504.

The spelling of 131158812 in words is "one hundred thirty-one million, one hundred fifty-eight thousand, eight hundred twelve".