13223123231 has 2 divisors, whose sum is σ = 13223123232. Its totient is φ = 13223123230.

The previous prime is 13223123219. The next prime is 13223123257. The reversal of 13223123231 is 13232132231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13223123231 - 2⁶ = 13223123167 is a prime.

It is a super-2 number, since 2×13223123231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13223123197 and 13223123206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13223123261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611561615 + 6611561616.

It is an arithmetic number, because the mean of its divisors is an integer number (6611561616).

Almost surely, 2^13223123231 is an apocalyptic number.

13223123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223123231 is an equidigital number, since it uses as much as digits as its factorization.

13223123231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

Adding to 13223123231 its reverse (13232132231), we get a palindrome (26455255462).

The spelling of 13223123231 in words is "thirteen billion, two hundred twenty-three million, one hundred twenty-three thousand, two hundred thirty-one".