131312221112 has 32 divisors (see below), whose sum is σ = 252731199600. Its totient is φ = 63926870784.

The previous prime is 131312221097. The next prime is 131312221169. The reversal of 131312221112 is 211122213131.

It is a congruent number.

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, 493037 + ... + 711132.

Almost surely, 2^131312221112 is an apocalyptic number.

It is an amenable number.

131312221112 is a deficient number, since it is larger than the sum of its proper divisors (121418978488).

131312221112 is a wasteful number, since it uses less digits than its factorization.

131312221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204535 (or 1204531 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 131312221112 its reverse (211122213131), we get a palindrome (342434434243).

The spelling of 131312221112 in words is "one hundred thirty-one billion, three hundred twelve million, two hundred twenty-one thousand, one hundred twelve".