12313330431 has 4 divisors (see below), whose sum is σ = 16417773912. Its totient is φ = 8208886952.

The previous prime is 12313330423. The next prime is 12313330451. The reversal of 12313330431 is 13403331321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13403331321 = 3 ⋅4467777107.

It is a cyclic number.

It is not a de Polignac number, because 12313330431 - 2³ = 12313330423 is a prime.

It is a super-2 number, since 2×12313330431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313330411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052221736 + ... + 2052221741.

It is an arithmetic number, because the mean of its divisors is an integer number (4104443478).

Almost surely, 2^12313330431 is an apocalyptic number.

12313330431 is a deficient number, since it is larger than the sum of its proper divisors (4104443481).

12313330431 is an equidigital number, since it uses as much as digits as its factorization.

12313330431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104443480.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 12313330431 its reverse (13403331321), we get a palindrome (25716661752).

The spelling of 12313330431 in words is "twelve billion, three hundred thirteen million, three hundred thirty thousand, four hundred thirty-one".