423431603 has 16 divisors (see below), whose sum is σ = 489139200. Its totient is φ = 359051616.

The previous prime is 423431551. The next prime is 423431653. The reversal of 423431603 is 306134324.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-423431603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423431653) 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, 273650 + ... + 275192.

It is an arithmetic number, because the mean of its divisors is an integer number (30571200).

Almost surely, 2^423431603 is an apocalyptic number.

423431603 is a deficient number, since it is larger than the sum of its proper divisors (65707597).

423431603 is a wasteful number, since it uses less digits than its factorization.

423431603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 423431603 is about 20577.4537540484. The cubic root of 423431603 is about 750.9212992210.

Adding to 423431603 its reverse (306134324), we get a palindrome (729565927).

The spelling of 423431603 in words is "four hundred twenty-three million, four hundred thirty-one thousand, six hundred three".