12313122321 has 32 divisors (see below), whose sum is σ = 17608907520. Its totient is φ = 7625885696.

The previous prime is 12313122317. The next prime is 12313122329. The reversal of 12313122321 is 12322131321.

It is a cyclic number.

It is not a de Polignac number, because 12313122321 - 2² = 12313122317 is a prime.

It is a super-2 number, since 2×12313122321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12313122329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3070900 + ... + 3074906.

It is an arithmetic number, because the mean of its divisors is an integer number (550278360).

Almost surely, 2^12313122321 is an apocalyptic number.

It is an amenable number.

12313122321 is a deficient number, since it is larger than the sum of its proper divisors (5295785199).

12313122321 is a wasteful number, since it uses less digits than its factorization.

12313122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793.

The product of its digits is 432, while the sum is 21.

Adding to 12313122321 its reverse (12322131321), we get a palindrome (24635253642).

The spelling of 12313122321 in words is "twelve billion, three hundred thirteen million, one hundred twenty-two thousand, three hundred twenty-one".