13113021123231 has 16 divisors (see below), whose sum is σ = 17785073577600. Its totient is φ = 8591569808288.

The previous prime is 13113021123229. The next prime is 13113021123289. The reversal of 13113021123231 is 13232112031131.

It is a cyclic number.

It is not a de Polignac number, because 13113021123231 - 2¹ = 13113021123229 is a prime.

It is a super-2 number, since 2×13113021123231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113021123031) 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, 9133296 + ... + 10471061.

It is an arithmetic number, because the mean of its divisors is an integer number (1111567098600).

Almost surely, 2^{13113021123231} is an apocalyptic number.

13113021123231 is a deficient number, since it is larger than the sum of its proper divisors (4672052454369).

13113021123231 is a wasteful number, since it uses less digits than its factorization.

13113021123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19608198.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13113021123231 its reverse (13232112031131), we get a palindrome (26345133154362).

The spelling of 13113021123231 in words is "thirteen trillion, one hundred thirteen billion, twenty-one million, one hundred twenty-three thousand, two hundred thirty-one".