12312020022331 has 4 divisors (see below), whose sum is σ = 12312036283464. Its totient is φ = 12312003761200.

The previous prime is 12312020022307. The next prime is 12312020022347. The reversal of 12312020022331 is 13322002021321.

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 12312020022331 - 2²⁹ = 12311483151419 is a prime.

It is a super-2 number, since 2×12312020022331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312020022301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6936385 + ... + 8528626.

It is an arithmetic number, because the mean of its divisors is an integer number (3078009070866).

Almost surely, 2^{12312020022331} is an apocalyptic number.

12312020022331 is a deficient number, since it is larger than the sum of its proper divisors (16261133).

12312020022331 is an equidigital number, since it uses as much as digits as its factorization.

12312020022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16261132.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12312020022331 its reverse (13322002021321), we get a palindrome (25634022043652).

The spelling of 12312020022331 in words is "twelve trillion, three hundred twelve billion, twenty million, twenty-two thousand, three hundred thirty-one".