31223320231339 has 2 divisors, whose sum is σ = 31223320231340. Its totient is φ = 31223320231338.

The previous prime is 31223320231321. The next prime is 31223320231349. The reversal of 31223320231339 is 93313202332213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31223320231339 - 2²⁷ = 31223186013611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31223320231298 and 31223320231307.

It is not a weakly prime, because it can be changed into another prime (31223320231349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611660115669 + 15611660115670.

It is an arithmetic number, because the mean of its divisors is an integer number (15611660115670).

Almost surely, 2^{31223320231339} is an apocalyptic number.

31223320231339 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223320231339 is an equidigital number, since it uses as much as digits as its factorization.

31223320231339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 37.

The spelling of 31223320231339 in words is "thirty-one trillion, two hundred twenty-three billion, three hundred twenty million, two hundred thirty-one thousand, three hundred thirty-nine".