13011220323 has 16 divisors (see below), whose sum is σ = 19296274560. Its totient is φ = 8664970248.

The previous prime is 13011220309. The next prime is 13011220361. The reversal of 13011220323 is 32302211031.

It is not a de Polignac number, because 13011220323 - 2⁶ = 13011220259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13011220296 and 13011220305.

It is not an unprimeable number, because it can be changed into a prime (13011220363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228865 + ... + 280002.

It is an arithmetic number, because the mean of its divisors is an integer number (1206017160).

Almost surely, 2^13011220323 is an apocalyptic number.

13011220323 is a deficient number, since it is larger than the sum of its proper divisors (6285054237).

13011220323 is an equidigital number, since it uses as much as digits as its factorization.

13011220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509823 (or 509817 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13011220323 its reverse (32302211031), we get a palindrome (45313431354).

The spelling of 13011220323 in words is "thirteen billion, eleven million, two hundred twenty thousand, three hundred twenty-three".