31223455324331 has 2 divisors, whose sum is σ = 31223455324332. Its totient is φ = 31223455324330.

The previous prime is 31223455324247. The next prime is 31223455324361. The reversal of 31223455324331 is 13342355432213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223455324331 is a prime.

It is a super-2 number, since 2×31223455324331² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31223455324361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611727662165 + 15611727662166.

It is an arithmetic number, because the mean of its divisors is an integer number (15611727662166).

Almost surely, 2^{31223455324331} is an apocalyptic number.

31223455324331 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223455324331 is an equidigital number, since it uses as much as digits as its factorization.

31223455324331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 41.

The spelling of 31223455324331 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred fifty-five million, three hundred twenty-four thousand, three hundred thirty-one".