13121310311323 has 16 divisors (see below), whose sum is σ = 13959543749760. Its totient is φ = 12290458320000.

The previous prime is 13121310311311. The next prime is 13121310311353. The reversal of 13121310311323 is 32311301312131.

It is a cyclic number.

It is not a de Polignac number, because 13121310311323 - 2⁹ = 13121310310811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121310311303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118957948 + ... + 119068198.

It is an arithmetic number, because the mean of its divisors is an integer number (872471484360).

Almost surely, 2^{13121310311323} is an apocalyptic number.

13121310311323 is a deficient number, since it is larger than the sum of its proper divisors (838233438437).

13121310311323 is a wasteful number, since it uses less digits than its factorization.

13121310311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143658.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 13121310311323 its reverse (32311301312131), we get a palindrome (45432611623454).

The spelling of 13121310311323 in words is "thirteen trillion, one hundred twenty-one billion, three hundred ten million, three hundred eleven thousand, three hundred twenty-three".