12312123113213 has 48 divisors (see below), whose sum is σ = 15677939562048. Its totient is φ = 9560936448000.

The previous prime is 12312123113197. The next prime is 12312123113299. The reversal of 12312123113213 is 31231132121321.

It is not a de Polignac number, because 12312123113213 - 2⁴ = 12312123113197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312123113713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 801510653 + ... + 801526013.

It is an arithmetic number, because the mean of its divisors is an integer number (326623740876).

Almost surely, 2^{12312123113213} is an apocalyptic number.

It is an amenable number.

12312123113213 is a deficient number, since it is larger than the sum of its proper divisors (3365816448835).

12312123113213 is a wasteful number, since it uses less digits than its factorization.

12312123113213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394 (or 20387 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

Adding to 12312123113213 its reverse (31231132121321), we get a palindrome (43543255234534).

The spelling of 12312123113213 in words is "twelve trillion, three hundred twelve billion, one hundred twenty-three million, one hundred thirteen thousand, two hundred thirteen".