12013031123312 has 20 divisors (see below), whose sum is σ = 24077842554120. Its totient is φ = 5799394335168.

The previous prime is 12013031123257. The next prime is 12013031123321. The reversal of 12013031123312 is 21332113031021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12945076178 + ... + 12945077105.

It is an arithmetic number, because the mean of its divisors is an integer number (1203892127706).

Almost surely, 2^{12013031123312} is an apocalyptic number.

It is an amenable number.

12013031123312 is an abundant number, since it is smaller than the sum of its proper divisors (12064811430808).

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

12013031123312 is a wasteful number, since it uses less digits than its factorization.

12013031123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25890153320 (or 25890153314 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12013031123312 its reverse (21332113031021), we get a palindrome (33345144154333).

The spelling of 12013031123312 in words is "twelve trillion, thirteen billion, thirty-one million, one hundred twenty-three thousand, three hundred twelve".