1021313311 has 2 divisors, whose sum is σ = 1021313312. Its totient is φ = 1021313310.

The previous prime is 1021313309. The next prime is 1021313317. The reversal of 1021313311 is 1133131201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021313311 - 2¹ = 1021313309 is a prime.

Together with 1021313309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021313317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510656655 + 510656656.

It is an arithmetic number, because the mean of its divisors is an integer number (510656656).

Almost surely, 2^1021313311 is an apocalyptic number.

1021313311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021313311 is an equidigital number, since it uses as much as digits as its factorization.

1021313311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1021313311 is about 31957.9929125720. The cubic root of 1021313311 is about 1007.0545532511.

Adding to 1021313311 its reverse (1133131201), we get a palindrome (2154444512).

The spelling of 1021313311 in words is "one billion, twenty-one million, three hundred thirteen thousand, three hundred eleven".