13121310323 has 4 divisors (see below), whose sum is σ = 14314156728. Its totient is φ = 11928463920.

The previous prime is 13121310313. The next prime is 13121310347. The reversal of 13121310323 is 32301312131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32301312131 = 11 ⋅2936482921.

It is a cyclic number.

It is not a de Polignac number, because 13121310323 - 2¹⁸ = 13121048179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121310295 and 13121310304.

It is not an unprimeable number, because it can be changed into a prime (13121310313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596423186 + ... + 596423207.

It is an arithmetic number, because the mean of its divisors is an integer number (3578539182).

Almost surely, 2^13121310323 is an apocalyptic number.

13121310323 is a deficient number, since it is larger than the sum of its proper divisors (1192846405).

13121310323 is a wasteful number, since it uses less digits than its factorization.

13121310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192846404.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13121310323 its reverse (32301312131), we get a palindrome (45422622454).

The spelling of 13121310323 in words is "thirteen billion, one hundred twenty-one million, three hundred ten thousand, three hundred twenty-three".