31112323120331 has 2 divisors, whose sum is σ = 31112323120332. Its totient is φ = 31112323120330.

The previous prime is 31112323120243. The next prime is 31112323120379. The reversal of 31112323120331 is 13302132321113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31112323120331 - 2¹⁰ = 31112323119307 is a prime.

It is a super-2 number, since 2×31112323120331² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31112323120331.

It is not a weakly prime, because it can be changed into another prime (31112323120391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556161560165 + 15556161560166.

It is an arithmetic number, because the mean of its divisors is an integer number (15556161560166).

Almost surely, 2^{31112323120331} is an apocalyptic number.

31112323120331 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112323120331 is an equidigital number, since it uses as much as digits as its factorization.

31112323120331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31112323120331 its reverse (13302132321113), we get a palindrome (44414455441444).

The spelling of 31112323120331 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty-three million, one hundred twenty thousand, three hundred thirty-one".