131323312 has 10 divisors (see below), whose sum is σ = 254438948. Its totient is φ = 65661648.

The previous prime is 131323303. The next prime is 131323349. The reversal of 131323312 is 213323131.

It is a self number, because there is not a number n which added to its sum of digits gives 131323312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103838 + ... + 4103869.

Almost surely, 2^131323312 is an apocalyptic number.

It is an amenable number.

131323312 is a deficient number, since it is larger than the sum of its proper divisors (123115636).

131323312 is an equidigital number, since it uses as much as digits as its factorization.

131323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207715 (or 8207709 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 131323312 is about 11459.6383887102. The cubic root of 131323312 is about 508.2927818110.

Adding to 131323312 its reverse (213323131), we get a palindrome (344646443).

The spelling of 131323312 in words is "one hundred thirty-one million, three hundred twenty-three thousand, three hundred twelve".