31312323323249 has 2 divisors, whose sum is σ = 31312323323250. Its totient is φ = 31312323323248.

The previous prime is 31312323323227. The next prime is 31312323323293. The reversal of 31312323323249 is 94232332321313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31177482342400 + 134840980849 = 5583680^2 + 367207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312323323249 is a prime.

It is not a weakly prime, because it can be changed into another prime (31312323323299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656161661624 + 15656161661625.

It is an arithmetic number, because the mean of its divisors is an integer number (15656161661625).

Almost surely, 2^{31312323323249} is an apocalyptic number.

It is an amenable number.

31312323323249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312323323249 is an equidigital number, since it uses as much as digits as its factorization.

31312323323249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 41.

The spelling of 31312323323249 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-three million, three hundred twenty-three thousand, two hundred forty-nine".