423331243393 has 4 divisors (see below), whose sum is σ = 423371736900. Its totient is φ = 423290749888.

The previous prime is 423331243381. The next prime is 423331243429. The reversal of 423331243393 is 393342133324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371425645809 + 51905597584 = 609447^2 + 227828^2 .

It is a cyclic number.

It is not a de Polignac number, because 423331243393 - 2³³ = 414741308801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423331243333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20231068 + ... + 20251981.

It is an arithmetic number, because the mean of its divisors is an integer number (105842934225).

Almost surely, 2^423331243393 is an apocalyptic number.

It is an amenable number.

423331243393 is a deficient number, since it is larger than the sum of its proper divisors (40493507).

423331243393 is a wasteful number, since it uses less digits than its factorization.

423331243393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40493506.

The product of its digits is 419904, while the sum is 40.

The spelling of 423331243393 in words is "four hundred twenty-three billion, three hundred thirty-one million, two hundred forty-three thousand, three hundred ninety-three".