120012313931 has 2 divisors, whose sum is σ = 120012313932. Its totient is φ = 120012313930.

The previous prime is 120012313877. The next prime is 120012313933. The reversal of 120012313931 is 139313210021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120012313931 - 2¹⁸ = 120012051787 is a prime.

It is a super-2 number, since 2×120012313931² (a number of 23 digits) contains 22 as substring.

Together with 120012313933, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120012313931.

It is not a weakly prime, because it can be changed into another prime (120012313933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60006156965 + 60006156966.

It is an arithmetic number, because the mean of its divisors is an integer number (60006156966).

Almost surely, 2^120012313931 is an apocalyptic number.

120012313931 is a deficient number, since it is larger than the sum of its proper divisors (1).

120012313931 is an equidigital number, since it uses as much as digits as its factorization.

120012313931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 120012313931 its reverse (139313210021), we get a palindrome (259325523952).

The spelling of 120012313931 in words is "one hundred twenty billion, twelve million, three hundred thirteen thousand, nine hundred thirty-one".