1004431032421 has 2 divisors, whose sum is σ = 1004431032422. Its totient is φ = 1004431032420.

The previous prime is 1004431032343. The next prime is 1004431032427. The reversal of 1004431032421 is 1242301344001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618560228196 + 385870804225 = 786486^2 + 621185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004431032421 - 2⁹ = 1004431031909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004431032427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502215516210 + 502215516211.

It is an arithmetic number, because the mean of its divisors is an integer number (502215516211).

Almost surely, 2^{1004431032421} is an apocalyptic number.

It is an amenable number.

1004431032421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004431032421 is an equidigital number, since it uses as much as digits as its factorization.

1004431032421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1004431032421 its reverse (1242301344001), we get a palindrome (2246732376422).

The spelling of 1004431032421 in words is "one trillion, four billion, four hundred thirty-one million, thirty-two thousand, four hundred twenty-one".