12320212031 has 2 divisors, whose sum is σ = 12320212032. Its totient is φ = 12320212030.

The previous prime is 12320211977. The next prime is 12320212033. The reversal of 12320212031 is 13021202321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320212031 is a prime.

It is a super-2 number, since 2×12320212031² (a number of 21 digits) contains 22 as substring.

Together with 12320212033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320212033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160106015 + 6160106016.

It is an arithmetic number, because the mean of its divisors is an integer number (6160106016).

Almost surely, 2^12320212031 is an apocalyptic number.

12320212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320212031 is an equidigital number, since it uses as much as digits as its factorization.

12320212031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12320212031 its reverse (13021202321), we get a palindrome (25341414352).

The spelling of 12320212031 in words is "twelve billion, three hundred twenty million, two hundred twelve thousand, thirty-one".