12423031213 has 4 divisors (see below), whose sum is σ = 12448967040. Its totient is φ = 12397095388.

The previous prime is 12423031207. The next prime is 12423031249. The reversal of 12423031213 is 31213032421.

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: 31213032421 = 9791 ⋅3187931.

It is a cyclic number.

It is not a de Polignac number, because 12423031213 - 2¹³ = 12423023021 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 (12423031253) 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, 12967195 + ... + 12968152.

It is an arithmetic number, because the mean of its divisors is an integer number (3112241760).

Almost surely, 2^12423031213 is an apocalyptic number.

It is an amenable number.

12423031213 is a deficient number, since it is larger than the sum of its proper divisors (25935827).

12423031213 is an equidigital number, since it uses as much as digits as its factorization.

12423031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25935826.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12423031213 its reverse (31213032421), we get a palindrome (43636063634).

The spelling of 12423031213 in words is "twelve billion, four hundred twenty-three million, thirty-one thousand, two hundred thirteen".