123131110303312 has 20 divisors (see below), whose sum is σ = 238614021197440. Its totient is φ = 61553298381408.

The previous prime is 123131110303261. The next prime is 123131110303319. The reversal of 123131110303312 is 213303011131321.

It is a super-2 number, since 2×123131110303312² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131110303319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765965262 + ... + 766125997.

It is an arithmetic number, because the mean of its divisors is an integer number (11930701059872).

Almost surely, 2^{123131110303312} is an apocalyptic number.

It is an amenable number.

123131110303312 is a deficient number, since it is larger than the sum of its proper divisors (115482910894128).

123131110303312 is a wasteful number, since it uses less digits than its factorization.

123131110303312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532096290 (or 1532096284 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 123131110303312 its reverse (213303011131321), we get a palindrome (336434121434633).

The spelling of 123131110303312 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, one hundred ten million, three hundred three thousand, three hundred twelve".