231324133231 has 2 divisors, whose sum is σ = 231324133232. Its totient is φ = 231324133230.

The previous prime is 231324133219. The next prime is 231324133267. The reversal of 231324133231 is 132331423132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231324133231 - 2¹⁵ = 231324100463 is a prime.

It is a super-2 number, since 2×231324133231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231324133231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231324133291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115662066615 + 115662066616.

It is an arithmetic number, because the mean of its divisors is an integer number (115662066616).

Almost surely, 2^231324133231 is an apocalyptic number.

231324133231 is a deficient number, since it is larger than the sum of its proper divisors (1).

231324133231 is an equidigital number, since it uses as much as digits as its factorization.

231324133231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

Adding to 231324133231 its reverse (132331423132), we get a palindrome (363655556363).

The spelling of 231324133231 in words is "two hundred thirty-one billion, three hundred twenty-four million, one hundred thirty-three thousand, two hundred thirty-one".