423852234217 has 2 divisors, whose sum is σ = 423852234218. Its totient is φ = 423852234216.

The previous prime is 423852234203. The next prime is 423852234241. The reversal of 423852234217 is 712432258324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416462424921 + 7389809296 = 645339^2 + 85964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423852234217 is a prime.

It is not a weakly prime, because it can be changed into another prime (423852234257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211926117108 + 211926117109.

It is an arithmetic number, because the mean of its divisors is an integer number (211926117109).

Almost surely, 2^423852234217 is an apocalyptic number.

It is an amenable number.

423852234217 is a deficient number, since it is larger than the sum of its proper divisors (1).

423852234217 is an equidigital number, since it uses as much as digits as its factorization.

423852234217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 43.

The spelling of 423852234217 in words is "four hundred twenty-three billion, eight hundred fifty-two million, two hundred thirty-four thousand, two hundred seventeen".