123323131331 has 16 divisors (see below), whose sum is σ = 131062548960. Its totient is φ = 115638182400.

The previous prime is 123323131307. The next prime is 123323131343. The reversal of 123323131331 is 133131323321.

It is a cyclic number.

It is not a de Polignac number, because 123323131331 - 2²⁶ = 123256022467 is a prime.

It is a super-2 number, since 2×123323131331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123323131331.

It is not an unprimeable number, because it can be changed into a prime (123323131231) 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 in 15 ways as a sum of consecutive naturals, for example, 7666565 + ... + 7682633.

It is an arithmetic number, because the mean of its divisors is an integer number (8191409310).

Almost surely, 2^123323131331 is an apocalyptic number.

123323131331 is a deficient number, since it is larger than the sum of its proper divisors (7739417629).

123323131331 is a wasteful number, since it uses less digits than its factorization.

123323131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17734.

The product of its digits is 2916, while the sum is 26.

Adding to 123323131331 its reverse (133131323321), we get a palindrome (256454454652).

The spelling of 123323131331 in words is "one hundred twenty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred thirty-one".