131122312 has 16 divisors (see below), whose sum is σ = 253785600. Its totient is φ = 63446160.

The previous prime is 131122297. The next prime is 131122337. The reversal of 131122312 is 213221131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264112 + ... + 264607.

It is an arithmetic number, because the mean of its divisors is an integer number (15861600).

Almost surely, 2^131122312 is an apocalyptic number.

It is an amenable number.

131122312 is a deficient number, since it is larger than the sum of its proper divisors (122663288).

131122312 is a wasteful number, since it uses less digits than its factorization.

131122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528756 (or 528752 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 131122312 is about 11450.8651201558. The cubic root of 131122312 is about 508.0333228807.

Adding to 131122312 its reverse (213221131), we get a palindrome (344343443).

The spelling of 131122312 in words is "one hundred thirty-one million, one hundred twenty-two thousand, three hundred twelve".