423330320993 has 2 divisors, whose sum is σ = 423330320994. Its totient is φ = 423330320992.

The previous prime is 423330320983. The next prime is 423330321049. The reversal of 423330320993 is 399023033324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406014919249 + 17315401744 = 637193^2 + 131588^2 .

It is a cyclic number.

It is not a de Polignac number, because 423330320993 - 2⁶ = 423330320929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423330320993.

It is not a weakly prime, because it can be changed into another prime (423330320983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211665160496 + 211665160497.

It is an arithmetic number, because the mean of its divisors is an integer number (211665160497).

Almost surely, 2^423330320993 is an apocalyptic number.

It is an amenable number.

423330320993 is a deficient number, since it is larger than the sum of its proper divisors (1).

423330320993 is an equidigital number, since it uses as much as digits as its factorization.

423330320993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 41.

The spelling of 423330320993 in words is "four hundred twenty-three billion, three hundred thirty million, three hundred twenty thousand, nine hundred ninety-three".