423043221017 has 2 divisors, whose sum is σ = 423043221018. Its totient is φ = 423043221016.

The previous prime is 423043220989. The next prime is 423043221061. The reversal of 423043221017 is 710122340324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271002495241 + 152040725776 = 520579^2 + 389924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423043221017 is a prime.

It is not a weakly prime, because it can be changed into another prime (423043221077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211521610508 + 211521610509.

It is an arithmetic number, because the mean of its divisors is an integer number (211521610509).

Almost surely, 2^423043221017 is an apocalyptic number.

It is an amenable number.

423043221017 is a deficient number, since it is larger than the sum of its proper divisors (1).

423043221017 is an equidigital number, since it uses as much as digits as its factorization.

423043221017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 423043221017 in words is "four hundred twenty-three billion, forty-three million, two hundred twenty-one thousand, seventeen".