423521323 has 8 divisors (see below), whose sum is σ = 450761328. Its totient is φ = 396539904.

The previous prime is 423521317. The next prime is 423521347. The reversal of 423521323 is 323125324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423521323 is a prime.

It is a super-2 number, since 2×423521323² = 358740622071340658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423521383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61261 + ... + 67822.

It is an arithmetic number, because the mean of its divisors is an integer number (56345166).

Almost surely, 2^423521323 is an apocalyptic number.

423521323 is a deficient number, since it is larger than the sum of its proper divisors (27240005).

423521323 is a wasteful number, since it uses less digits than its factorization.

423521323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129293.

The product of its digits is 4320, while the sum is 25.

The square root of 423521323 is about 20579.6336945049. The cubic root of 423521323 is about 750.9743325016.

Adding to 423521323 its reverse (323125324), we get a palindrome (746646647).

The spelling of 423521323 in words is "four hundred twenty-three million, five hundred twenty-one thousand, three hundred twenty-three".