12023313031 has 4 divisors (see below), whose sum is σ = 12656119000. Its totient is φ = 11390507064.

The previous prime is 12023313023. The next prime is 12023313097. The reversal of 12023313031 is 13031332021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12023313031 - 2³ = 12023313023 is a prime.

It is a super-2 number, since 2×12023313031² (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), and also a Moran number because the ratio is a prime number: 632805949 = 12023313031 / (1 + 2 + 0 + 2 + 3 + 3 + 1 + 3 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023313331) 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, 316402956 + ... + 316402993.

It is an arithmetic number, because the mean of its divisors is an integer number (3164029750).

Almost surely, 2^12023313031 is an apocalyptic number.

12023313031 is a deficient number, since it is larger than the sum of its proper divisors (632805969).

12023313031 is an equidigital number, since it uses as much as digits as its factorization.

12023313031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632805968.

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

Adding to 12023313031 its reverse (13031332021), we get a palindrome (25054645052).

The spelling of 12023313031 in words is "twelve billion, twenty-three million, three hundred thirteen thousand, thirty-one".