13233212231 has 2 divisors, whose sum is σ = 13233212232. Its totient is φ = 13233212230.

The previous prime is 13233212221. The next prime is 13233212243. The reversal of 13233212231 is 13221233231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13233212231 is a prime.

It is a super-2 number, since 2×13233212231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13233212197 and 13233212206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13233212221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6616606115 + 6616606116.

It is an arithmetic number, because the mean of its divisors is an integer number (6616606116).

Almost surely, 2^13233212231 is an apocalyptic number.

13233212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13233212231 is an equidigital number, since it uses as much as digits as its factorization.

13233212231 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 13233212231 its reverse (13221233231), we get a palindrome (26454445462).

The spelling of 13233212231 in words is "thirteen billion, two hundred thirty-three million, two hundred twelve thousand, two hundred thirty-one".