13331320023 has 16 divisors (see below), whose sum is σ = 20331178496. Its totient is φ = 7611602400.

The previous prime is 13331320001. The next prime is 13331320031. The reversal of 13331320023 is 32002313331.

It is not a de Polignac number, because 13331320023 - 2⁹ = 13331319511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331325023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236203 + ... + 287148.

It is an arithmetic number, because the mean of its divisors is an integer number (1270698656).

Almost surely, 2^13331320023 is an apocalyptic number.

13331320023 is a deficient number, since it is larger than the sum of its proper divisors (6999858473).

13331320023 is a wasteful number, since it uses less digits than its factorization.

13331320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524574.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13331320023 its reverse (32002313331), we get a palindrome (45333633354).

The spelling of 13331320023 in words is "thirteen billion, three hundred thirty-one million, three hundred twenty thousand, twenty-three".