12310020031 has 16 divisors (see below), whose sum is σ = 12759139008. Its totient is φ = 11868364800.

The previous prime is 12310020007. The next prime is 12310020077. The reversal of 12310020031 is 13002001321.

It is a cyclic number.

It is not a de Polignac number, because 12310020031 - 2¹¹ = 12310017983 is a prime.

It is a super-2 number, since 2×12310020031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12310019993 and 12310020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310020631) 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, 3271191 + ... + 3274951.

It is an arithmetic number, because the mean of its divisors is an integer number (797446188).

Almost surely, 2^12310020031 is an apocalyptic number.

12310020031 is a deficient number, since it is larger than the sum of its proper divisors (449118977).

12310020031 is an equidigital number, since it uses as much as digits as its factorization.

12310020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12310020031 its reverse (13002001321), we get a palindrome (25312021352).

The spelling of 12310020031 in words is "twelve billion, three hundred ten million, twenty thousand, thirty-one".