423013321 has 16 divisors (see below), whose sum is σ = 465510400. Its totient is φ = 382870800.

The previous prime is 423013291. The next prime is 423013333. The reversal of 423013321 is 123310324.

It is a cyclic number.

It is not a de Polignac number, because 423013321 - 2⁵ = 423013289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423013361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41986 + ... + 51076.

It is an arithmetic number, because the mean of its divisors is an integer number (29094400).

Almost surely, 2^423013321 is an apocalyptic number.

It is an amenable number.

423013321 is a deficient number, since it is larger than the sum of its proper divisors (42497079).

423013321 is a wasteful number, since it uses less digits than its factorization.

423013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 423013321 is about 20567.2876432455. The cubic root of 423013321 is about 750.6739547911.

Adding to 423013321 its reverse (123310324), we get a palindrome (546323645).

The spelling of 423013321 in words is "four hundred twenty-three million, thirteen thousand, three hundred twenty-one".