123332431231 has 2 divisors, whose sum is σ = 123332431232. Its totient is φ = 123332431230.

The previous prime is 123332431223. The next prime is 123332431273. The reversal of 123332431231 is 132134233321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123332431231 - 2³ = 123332431223 is a prime.

It is a super-2 number, since 2×123332431231² (a number of 23 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 123332431231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123332431291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61666215615 + 61666215616.

It is an arithmetic number, because the mean of its divisors is an integer number (61666215616).

Almost surely, 2^123332431231 is an apocalyptic number.

123332431231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123332431231 is an equidigital number, since it uses as much as digits as its factorization.

123332431231 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 123332431231 its reverse (132134233321), we get a palindrome (255466664552).

The spelling of 123332431231 in words is "one hundred twenty-three billion, three hundred thirty-two million, four hundred thirty-one thousand, two hundred thirty-one".