1004023231 has 6 divisors (see below), whose sum is σ = 1031893800. Its totient is φ = 976886136.

The previous prime is 1004023219. The next prime is 1004023309. The reversal of 1004023231 is 1323204001.

It is a happy number.

It is not a de Polignac number, because 1004023231 - 2⁷ = 1004023103 is a prime.

It is a super-2 number, since 2×1004023231² = 2016125296775358722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004023201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365331 + ... + 368068.

It is an arithmetic number, because the mean of its divisors is an integer number (171982300).

Almost surely, 2^1004023231 is an apocalyptic number.

1004023231 is a deficient number, since it is larger than the sum of its proper divisors (27870569).

1004023231 is an frugal number, since it uses more digits than its factorization.

1004023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733473 (or 733436 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1004023231 is about 31686.3256153187. The cubic root of 1004023231 is about 1001.3392825216.

Adding to 1004023231 its reverse (1323204001), we get a palindrome (2327227232).

The spelling of 1004023231 in words is "one billion, four million, twenty-three thousand, two hundred thirty-one".