12320181313 has 4 divisors (see below), whose sum is σ = 13440197808. Its totient is φ = 11200164820.

The previous prime is 12320181283. The next prime is 12320181317. The reversal of 12320181313 is 31318102321.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12320181313 - 2⁵ = 12320181281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12320181317) 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, 560008231 + ... + 560008252.

It is an arithmetic number, because the mean of its divisors is an integer number (3360049452).

Almost surely, 2^12320181313 is an apocalyptic number.

It is an amenable number.

12320181313 is a deficient number, since it is larger than the sum of its proper divisors (1120016495).

12320181313 is a wasteful number, since it uses less digits than its factorization.

12320181313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120016494.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 12320181313 its reverse (31318102321), we get a palindrome (43638283634).

The spelling of 12320181313 in words is "twelve billion, three hundred twenty million, one hundred eighty-one thousand, three hundred thirteen".