1021311304 has 16 divisors (see below), whose sum is σ = 2062263420. Its totient is φ = 471374400.

The previous prime is 1021311281. The next prime is 1021311323. The reversal of 1021311304 is 4031131201.

It can be written as a sum of positive squares in 2 ways, for example, as 984076900 + 37234404 = 31370^2 + 6102^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4910047 + ... + 4910254.

Almost surely, 2^1021311304 is an apocalyptic number.

It is an amenable number.

1021311304 is an abundant number, since it is smaller than the sum of its proper divisors (1040952116).

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

1021311304 is a wasteful number, since it uses less digits than its factorization.

1021311304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9820320 (or 9820316 counting only the distinct ones).

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

The square root of 1021311304 is about 31957.9615119613. The cubic root of 1021311304 is about 1007.0538935907.

Adding to 1021311304 its reverse (4031131201), we get a palindrome (5052442505).

The spelling of 1021311304 in words is "one billion, twenty-one million, three hundred eleven thousand, three hundred four".