423502023 has 16 divisors (see below), whose sum is σ = 648686336. Its totient is φ = 240744960.

The previous prime is 423502021. The next prime is 423502031. The reversal of 423502023 is 320205324.

It is not a de Polignac number, because 423502023 - 2¹ = 423502021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423502021) 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, 48193 + ... + 56298.

It is an arithmetic number, because the mean of its divisors is an integer number (40542896).

Almost surely, 2^423502023 is an apocalyptic number.

423502023 is a deficient number, since it is larger than the sum of its proper divisors (225184313).

423502023 is a wasteful number, since it uses less digits than its factorization.

423502023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104694.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 423502023 is about 20579.1647789700. The cubic root of 423502023 is about 750.9629249494.

Adding to 423502023 its reverse (320205324), we get a palindrome (743707347).

The spelling of 423502023 in words is "four hundred twenty-three million, five hundred two thousand, twenty-three".