1021313323 has 16 divisors (see below), whose sum is σ = 1047039840. Its totient is φ = 996033024.

The previous prime is 1021313317. The next prime is 1021313333. The reversal of 1021313323 is 3233131201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021313323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021313323.

It is not an unprimeable number, because it can be changed into a prime (1021313303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3485565 + ... + 3485857.

It is an arithmetic number, because the mean of its divisors is an integer number (65439990).

Almost surely, 2^1021313323 is an apocalyptic number.

1021313323 is a deficient number, since it is larger than the sum of its proper divisors (25726517).

1021313323 is a wasteful number, since it uses less digits than its factorization.

1021313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1021313323 is about 31957.9931003184. The cubic root of 1021313323 is about 1007.0545571953.

Adding to 1021313323 its reverse (3233131201), we get a palindrome (4254444524).

The spelling of 1021313323 in words is "one billion, twenty-one million, three hundred thirteen thousand, three hundred twenty-three".