1002331997 has 2 divisors, whose sum is σ = 1002331998. Its totient is φ = 1002331996.

The previous prime is 1002331991. The next prime is 1002332027. The reversal of 1002331997 is 7991332001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839029156 + 163302841 = 28966^2 + 12779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002331997 - 2¹² = 1002327901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002331991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501165998 + 501165999.

It is an arithmetic number, because the mean of its divisors is an integer number (501165999).

Almost surely, 2^1002331997 is an apocalyptic number.

It is an amenable number.

1002331997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002331997 is an equidigital number, since it uses as much as digits as its factorization.

1002331997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1002331997 is about 31659.6272403830. The cubic root of 1002331997 is about 1000.7767288694.

Adding to 1002331997 its reverse (7991332001), we get a palindrome (8993663998).

The spelling of 1002331997 in words is "one billion, two million, three hundred thirty-one thousand, nine hundred ninety-seven".