1002002312 has 16 divisors (see below), whose sum is σ = 1914203340. Its totient is φ = 491548096.

The previous prime is 1002002303. The next prime is 1002002329. The reversal of 1002002312 is 2132002001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 971818276 + 30184036 = 31174^2 + 5494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1002002293 and 1002002302.

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 3 ways as a sum of consecutive naturals, for example, 1181183 + ... + 1182030.

Almost surely, 2^1002002312 is an apocalyptic number.

It is an amenable number.

1002002312 is a deficient number, since it is larger than the sum of its proper divisors (912201028).

1002002312 is a wasteful number, since it uses less digits than its factorization.

1002002312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363272 (or 2363268 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1002002312 is about 31654.4201020963. The cubic root of 1002002312 is about 1000.6669923556. Note that the first 3 decimals are identical.

Adding to 1002002312 its reverse (2132002001), we get a palindrome (3134004313).

The spelling of 1002002312 in words is "one billion, two million, two thousand, three hundred twelve".