12320302031 has 16 divisors (see below), whose sum is σ = 13120984800. Its totient is φ = 11535187968.

The previous prime is 12320302021. The next prime is 12320302063. The reversal of 12320302031 is 13020302321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320302031 is a prime.

It is a super-2 number, since 2×12320302031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320302021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412921 + ... + 1421613.

It is an arithmetic number, because the mean of its divisors is an integer number (820061550).

Almost surely, 2^12320302031 is an apocalyptic number.

12320302031 is a deficient number, since it is larger than the sum of its proper divisors (800682769).

12320302031 is an equidigital number, since it uses as much as digits as its factorization.

12320302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9578.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12320302031 its reverse (13020302321), we get a palindrome (25340604352).

The spelling of 12320302031 in words is "twelve billion, three hundred twenty million, three hundred two thousand, thirty-one".