131202312 has 32 divisors (see below), whose sum is σ = 333568800. Its totient is φ = 42992384.

The previous prime is 131202301. The next prime is 131202347. The reversal of 131202312 is 213202131.

It is a junction number, because it is equal to n+sod(n) for n = 131202291 and 131202300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44913 + ... + 47744.

It is an arithmetic number, because the mean of its divisors is an integer number (10424025).

Almost surely, 2^131202312 is an apocalyptic number.

131202312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131202312 is an abundant number, since it is smaller than the sum of its proper divisors (202366488).

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

131202312 is a wasteful number, since it uses less digits than its factorization.

131202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92725 (or 92721 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131202312 is about 11454.3577733542. The cubic root of 131202312 is about 508.1366218602.

Adding to 131202312 its reverse (213202131), we get a palindrome (344404443).

The spelling of 131202312 in words is "one hundred thirty-one million, two hundred two thousand, three hundred twelve".