12323031013 has 4 divisors (see below), whose sum is σ = 12326564448. Its totient is φ = 12319497580.

The previous prime is 12323030981. The next prime is 12323031037. The reversal of 12323031013 is 31013032321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31013032321 = 19 ⋅1632264859.

It is a cyclic number.

It is not a de Polignac number, because 12323031013 - 2⁵ = 12323030981 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 (12323031313) 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, 1761481 + ... + 1768462.

It is an arithmetic number, because the mean of its divisors is an integer number (3081641112).

Almost surely, 2^12323031013 is an apocalyptic number.

It is an amenable number.

12323031013 is a deficient number, since it is larger than the sum of its proper divisors (3533435).

12323031013 is an equidigital number, since it uses as much as digits as its factorization.

12323031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533434.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12323031013 its reverse (31013032321), we get a palindrome (43336063334).

The spelling of 12323031013 in words is "twelve billion, three hundred twenty-three million, thirty-one thousand, thirteen".