1004431023 has 48 divisors (see below), whose sum is σ = 1557011456. Its totient is φ = 646652160.

The previous prime is 1004431007. The next prime is 1004431027. The reversal of 1004431023 is 3201344001.

It is not a de Polignac number, because 1004431023 - 2⁴ = 1004431007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004430987 and 1004431005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004431027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1013058 + ... + 1014048.

Almost surely, 2^1004431023 is an apocalyptic number.

1004431023 is a deficient number, since it is larger than the sum of its proper divisors (552580433).

1004431023 is an frugal number, since it uses more digits than its factorization.

1004431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1004431023 is about 31692.7597883176. The cubic root of 1004431023 is about 1001.4748314695.

Adding to 1004431023 its reverse (3201344001), we get a palindrome (4205775024).

The spelling of 1004431023 in words is "one billion, four million, four hundred thirty-one thousand, twenty-three".