1004004431 has 2 divisors, whose sum is σ = 1004004432. Its totient is φ = 1004004430.

The previous prime is 1004004427. The next prime is 1004004451. The reversal of 1004004431 is 1344004001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1004004431 - 2² = 1004004427 is a prime.

It is a super-2 number, since 2×1004004431² = 2016049794935267522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004004401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502002215 + 502002216.

It is an arithmetic number, because the mean of its divisors is an integer number (502002216).

Almost surely, 2^1004004431 is an apocalyptic number.

1004004431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004004431 is an equidigital number, since it uses as much as digits as its factorization.

1004004431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1004004431 is about 31686.0289559926. The cubic root of 1004004431 is about 1001.3330325679. Note that the first 3 decimals are identical.

Adding to 1004004431 its reverse (1344004001), we get a palindrome (2348008432).

The spelling of 1004004431 in words is "one billion, four million, four thousand, four hundred thirty-one".