13123131100012 has 24 divisors (see below), whose sum is σ = 24491328054480. Its totient is φ = 6131162388480.

The previous prime is 13123131099889. The next prime is 13123131100139. The reversal of 13123131100012 is 21000113132131.

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, 694189189 + ... + 694208092.

It is an arithmetic number, because the mean of its divisors is an integer number (1020472002270).

Almost surely, 2^{13123131100012} is an apocalyptic number.

It is an amenable number.

13123131100012 is a deficient number, since it is larger than the sum of its proper divisors (11368196954468).

13123131100012 is a wasteful number, since it uses less digits than its factorization.

13123131100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388397441 (or 1388397439 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 13123131100012 its reverse (21000113132131), we get a palindrome (34123244232143).

The spelling of 13123131100012 in words is "thirteen trillion, one hundred twenty-three billion, one hundred thirty-one million, one hundred thousand, twelve".