131271312 has 20 divisors (see below), whose sum is σ = 339117680. Its totient is φ = 43757088.

The previous prime is 131271277. The next prime is 131271317. The reversal of 131271312 is 213172131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131271317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367362 + ... + 1367457.

It is an arithmetic number, because the mean of its divisors is an integer number (16955884).

Almost surely, 2^131271312 is an apocalyptic number.

131271312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131271312 is an abundant number, since it is smaller than the sum of its proper divisors (207846368).

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

131271312 is a wasteful number, since it uses less digits than its factorization.

131271312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734830 (or 2734824 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 131271312 is about 11457.3693315700. The cubic root of 131271312 is about 508.2256835082.

The spelling of 131271312 in words is "one hundred thirty-one million, two hundred seventy-one thousand, three hundred twelve".