1004430421331 has 2 divisors, whose sum is σ = 1004430421332. Its totient is φ = 1004430421330.

The previous prime is 1004430421277. The next prime is 1004430421369. The reversal of 1004430421331 is 1331240344001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1004430421331 - 2¹⁴ = 1004430404947 is a prime.

It is a super-2 number, since 2×1004430421331² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004430421331.

It is not a weakly prime, because it can be changed into another prime (1004430421381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502215210665 + 502215210666.

It is an arithmetic number, because the mean of its divisors is an integer number (502215210666).

Almost surely, 2^{1004430421331} is an apocalyptic number.

1004430421331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004430421331 is an equidigital number, since it uses as much as digits as its factorization.

1004430421331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1004430421331 its reverse (1331240344001), we get a palindrome (2335670765332).

The spelling of 1004430421331 in words is "one trillion, four billion, four hundred thirty million, four hundred twenty-one thousand, three hundred thirty-one".