1004121331 has 2 divisors, whose sum is σ = 1004121332. Its totient is φ = 1004121330.

The previous prime is 1004121323. The next prime is 1004121343. The reversal of 1004121331 is 1331214001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1004121331 - 2³ = 1004121323 is a prime.

It is a super-2 number, since 2×1004121331² = 2016519294738423122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1004121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502060665 + 502060666.

It is an arithmetic number, because the mean of its divisors is an integer number (502060666).

Almost surely, 2^1004121331 is an apocalyptic number.

1004121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004121331 is an equidigital number, since it uses as much as digits as its factorization.

1004121331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1004121331 is about 31687.8735638730. The cubic root of 1004121331 is about 1001.3718940460.

Adding to 1004121331 its reverse (1331214001), we get a palindrome (2335335332).

The spelling of 1004121331 in words is "one billion, four million, one hundred twenty-one thousand, three hundred thirty-one".