423313422021 has 18 divisors (see below), whose sum is σ = 711281737062. Its totient is φ = 241893383760.

The previous prime is 423313422019. The next prime is 423313422071. The reversal of 423313422021 is 120224313324.

423313422021 is a `hidden beast` number, since 4 + 233 + 1 + 3 + 422 + 0 + 2 + 1 = 666.

423313422021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 394021099521 + 29292322500 = 627711^2 + 171150^2 .

It is not a de Polignac number, because 423313422021 - 2¹ = 423313422019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423313422001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 479946750 + ... + 479947631.

It is an arithmetic number, because the mean of its divisors is an integer number (39515652059).

Almost surely, 2^423313422021 is an apocalyptic number.

It is an amenable number.

423313422021 is a deficient number, since it is larger than the sum of its proper divisors (287968315041).

423313422021 is a wasteful number, since it uses less digits than its factorization.

423313422021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959894401 (or 959894391 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 423313422021 its reverse (120224313324), we get a palindrome (543537735345).

The spelling of 423313422021 in words is "four hundred twenty-three billion, three hundred thirteen million, four hundred twenty-two thousand, twenty-one".