12031323220031 has 2 divisors, whose sum is σ = 12031323220032. Its totient is φ = 12031323220030.

The previous prime is 12031323220027. The next prime is 12031323220051. The reversal of 12031323220031 is 13002232313021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12031323220031 - 2² = 12031323220027 is a prime.

It is a super-2 number, since 2×12031323220031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031323219979 and 12031323220006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031323220051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015661610015 + 6015661610016.

It is an arithmetic number, because the mean of its divisors is an integer number (6015661610016).

Almost surely, 2^{12031323220031} is an apocalyptic number.

12031323220031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031323220031 is an equidigital number, since it uses as much as digits as its factorization.

12031323220031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 12031323220031 its reverse (13002232313021), we get a palindrome (25033555533052).

The spelling of 12031323220031 in words is "twelve trillion, thirty-one billion, three hundred twenty-three million, two hundred twenty thousand, thirty-one".