131302312 has 32 divisors (see below), whose sum is σ = 263037600. Its totient is φ = 61262784.

The previous prime is 131302289. The next prime is 131302313. The reversal of 131302312 is 213203131.

It is not an unprimeable number, because it can be changed into a prime (131302313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3738 + ... + 16630.

It is an arithmetic number, because the mean of its divisors is an integer number (8219925).

Almost surely, 2^131302312 is an apocalyptic number.

It is an amenable number.

131302312 is an abundant number, since it is smaller than the sum of its proper divisors (131735288).

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

131302312 is a wasteful number, since it uses less digits than its factorization.

131302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12985 (or 12981 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131302312 is about 11458.7220927990. The cubic root of 131302312 is about 508.2656865520.

Adding to 131302312 its reverse (213203131), we get a palindrome (344505443).

The spelling of 131302312 in words is "one hundred thirty-one million, three hundred two thousand, three hundred twelve".