13023112231 has 4 divisors (see below), whose sum is σ = 13072630032. Its totient is φ = 12973594432.

The previous prime is 13023112229. The next prime is 13023112237. The reversal of 13023112231 is 13221132031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13023112231 - 2¹ = 13023112229 is a prime.

It is a super-2 number, since 2×13023112231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13023112199 and 13023112208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023112237) 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, 24758506 + ... + 24759031.

It is an arithmetic number, because the mean of its divisors is an integer number (3268157508).

Almost surely, 2^13023112231 is an apocalyptic number.

13023112231 is a deficient number, since it is larger than the sum of its proper divisors (49517801).

13023112231 is an equidigital number, since it uses as much as digits as its factorization.

13023112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49517800.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13023112231 its reverse (13221132031), we get a palindrome (26244244262).

The spelling of 13023112231 in words is "thirteen billion, twenty-three million, one hundred twelve thousand, two hundred thirty-one".