123331311310312 has 16 divisors (see below), whose sum is σ = 264281381379360. Its totient is φ = 52856276275824.

The previous prime is 123331311310307. The next prime is 123331311310343. The reversal of 123331311310312 is 213013113133321.

It is a happy number.

It is a super-2 number, since 2×123331311310312² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1101172422358 + ... + 1101172422469.

It is an arithmetic number, because the mean of its divisors is an integer number (16517586336210).

Almost surely, 2^{123331311310312} is an apocalyptic number.

It is an amenable number.

123331311310312 is an abundant number, since it is smaller than the sum of its proper divisors (140950070069048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123331311310312 is a wasteful number, since it uses less digits than its factorization.

123331311310312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202344844840 (or 2202344844836 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 123331311310312 its reverse (213013113133321), we get a palindrome (336344424443633).

The spelling of 123331311310312 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred eleven million, three hundred ten thousand, three hundred twelve".