1021315973 has 2 divisors, whose sum is σ = 1021315974. Its totient is φ = 1021315972.

The previous prime is 1021315951. The next prime is 1021316003. The reversal of 1021315973 is 3795131201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1021313764 + 2209 = 31958^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021315973 - 2¹⁰ = 1021314949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021315073) 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, 510657986 + 510657987.

It is an arithmetic number, because the mean of its divisors is an integer number (510657987).

Almost surely, 2^1021315973 is an apocalyptic number.

It is an amenable number.

1021315973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021315973 is an equidigital number, since it uses as much as digits as its factorization.

1021315973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 1021315973 is about 31958.0345609676. The cubic root of 1021315973 is about 1007.0554281954.

The spelling of 1021315973 in words is "one billion, twenty-one million, three hundred fifteen thousand, nine hundred seventy-three".