131445912 has 64 divisors (see below), whose sum is σ = 354987360. Its totient is φ = 40320000.

The previous prime is 131445907. The next prime is 131445929. The reversal of 131445912 is 219544131.

It is a self number, because there is not a number n which added to its sum of digits gives 131445912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187162 + ... + 187862.

Almost surely, 2^131445912 is an apocalyptic number.

131445912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131445912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177493680).

131445912 is an abundant number, since it is smaller than the sum of its proper divisors (223541448).

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

131445912 is a wasteful number, since it uses less digits than its factorization.

131445912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1320 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 131445912 is about 11464.9863497520. The cubic root of 131445912 is about 508.4509088836.

The spelling of 131445912 in words is "one hundred thirty-one million, four hundred forty-five thousand, nine hundred twelve".