12312303031 has 16 divisors (see below), whose sum is σ = 14831078400. Its totient is φ = 9984943008.

The previous prime is 12312303019. The next prime is 12312303043. The reversal of 12312303031 is 13030321321.

It is an interprime number because it is at equal distance from previous prime (12312303019) and next prime (12312303043).

It is a cyclic number.

It is not a de Polignac number, because 12312303031 - 2¹⁷ = 12312171959 is a prime.

It is a super-2 number, since 2×12312303031² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312303011) 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, 42930 + ... + 162688.

It is an arithmetic number, because the mean of its divisors is an integer number (926942400).

Almost surely, 2^12312303031 is an apocalyptic number.

12312303031 is a deficient number, since it is larger than the sum of its proper divisors (2518775369).

12312303031 is a wasteful number, since it uses less digits than its factorization.

12312303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120558.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12312303031 its reverse (13030321321), we get a palindrome (25342624352).

The spelling of 12312303031 in words is "twelve billion, three hundred twelve million, three hundred three thousand, thirty-one".