1331002002 has 16 divisors (see below), whose sum is σ = 2904004512. Its totient is φ = 403333920.

The previous prime is 1331001953. The next prime is 1331002021. The reversal of 1331002002 is 2002001331.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10083283 + ... + 10083414.

It is an arithmetic number, because the mean of its divisors is an integer number (181500282).

Almost surely, 2^1331002002 is an apocalyptic number.

1331002002 is an abundant number, since it is smaller than the sum of its proper divisors (1573002510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331002002 is a wasteful number, since it uses less digits than its factorization.

1331002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166713.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1331002002 is about 36482.9001314314. The cubic root of 1331002002 is about 1100.0005515149. Note that the first 3 decimals are identical.

Adding to 1331002002 its reverse (2002001331), we get a palindrome (3333003333).

The spelling of 1331002002 in words is "one billion, three hundred thirty-one million, two thousand, two".