1231313113112 has 32 divisors (see below), whose sum is σ = 2414362572000. Its totient is φ = 587600242944.

The previous prime is 1231313113097. The next prime is 1231313113139. The reversal of 1231313113112 is 2113113131321.

It is a super-2 number, since 2×1231313113112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 7237487 + ... + 7405662.

It is an arithmetic number, because the mean of its divisors is an integer number (75448830375).

Almost surely, 2^{1231313113112} is an apocalyptic number.

It is an amenable number.

1231313113112 is a deficient number, since it is larger than the sum of its proper divisors (1183049458888).

1231313113112 is a wasteful number, since it uses less digits than its factorization.

1231313113112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14643635 (or 14643631 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

Adding to 1231313113112 its reverse (2113113131321), we get a palindrome (3344426244433).

The spelling of 1231313113112 in words is "one trillion, two hundred thirty-one billion, three hundred thirteen million, one hundred thirteen thousand, one hundred twelve".