13211332231 has 2 divisors, whose sum is σ = 13211332232. Its totient is φ = 13211332230.

The previous prime is 13211332229. The next prime is 13211332243. The reversal of 13211332231 is 13223311231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13211332231 - 2¹ = 13211332229 is a prime.

It is a super-2 number, since 2×13211332231² (a number of 21 digits) contains 22 as substring.

Together with 13211332229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211332261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605666115 + 6605666116.

It is an arithmetic number, because the mean of its divisors is an integer number (6605666116).

Almost surely, 2^13211332231 is an apocalyptic number.

13211332231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211332231 is an equidigital number, since it uses as much as digits as its factorization.

13211332231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

Adding to 13211332231 its reverse (13223311231), we get a palindrome (26434643462).

The spelling of 13211332231 in words is "thirteen billion, two hundred eleven million, three hundred thirty-two thousand, two hundred thirty-one".