13323031993 has 2 divisors, whose sum is σ = 13323031994. Its totient is φ = 13323031992.

The previous prime is 13323031987. The next prime is 13323032029. The reversal of 13323031993 is 39913032331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10725294969 + 2597737024 = 103563^2 + 50968^2 .

It is a cyclic number.

It is not a de Polignac number, because 13323031993 - 2³³ = 4733097401 is a prime.

It is not a weakly prime, because it can be changed into another prime (13323031793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661515996 + 6661515997.

It is an arithmetic number, because the mean of its divisors is an integer number (6661515997).

Almost surely, 2^13323031993 is an apocalyptic number.

It is an amenable number.

13323031993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13323031993 is an equidigital number, since it uses as much as digits as its factorization.

13323031993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 37.

The spelling of 13323031993 in words is "thirteen billion, three hundred twenty-three million, thirty-one thousand, nine hundred ninety-three".