1231352315012 has 12 divisors (see below), whose sum is σ = 2154902279376. Its totient is φ = 615665949480.

The previous prime is 1231352314999. The next prime is 1231352315201. The reversal of 1231352315012 is 2105132531321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2277314 + ... + 2765657.

It is an arithmetic number, because the mean of its divisors is an integer number (179575189948).

Almost surely, 2^{1231352315012} is an apocalyptic number.

It is an amenable number.

1231352315012 is a deficient number, since it is larger than the sum of its proper divisors (923549964364).

1231352315012 is a wasteful number, since it uses less digits than its factorization.

1231352315012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104018 (or 5104016 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 1231352315012 its reverse (2105132531321), we get a palindrome (3336484846333).

The spelling of 1231352315012 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-two million, three hundred fifteen thousand, twelve".