423240323 has 16 divisors (see below), whose sum is σ = 468720000. Its totient is φ = 378958080.

The previous prime is 423240289. The next prime is 423240341. The reversal of 423240323 is 323042324.

It is a de Polignac number, because none of the positive numbers 2^k-423240323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423240343) 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, 455123 + ... + 456051.

It is an arithmetic number, because the mean of its divisors is an integer number (29295000).

Almost surely, 2^423240323 is an apocalyptic number.

423240323 is a deficient number, since it is larger than the sum of its proper divisors (45479677).

423240323 is a wasteful number, since it uses less digits than its factorization.

423240323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 423240323 is about 20572.8054236655. The cubic root of 423240323 is about 750.8082090476.

Adding to 423240323 its reverse (323042324), we get a palindrome (746282647).

The spelling of 423240323 in words is "four hundred twenty-three million, two hundred forty thousand, three hundred twenty-three".