1021310089 has 2 divisors, whose sum is σ = 1021310090. Its totient is φ = 1021310088.

The previous prime is 1021310083. The next prime is 1021310107. The reversal of 1021310089 is 9800131201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707134464 + 314175625 = 26592^2 + 17725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021310089 - 2²¹ = 1019212937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021310083) by changing a digit.

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 as a sum of consecutive naturals, namely, 510655044 + 510655045.

It is an arithmetic number, because the mean of its divisors is an integer number (510655045).

Almost surely, 2^1021310089 is an apocalyptic number.

It is an amenable number.

1021310089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021310089 is an equidigital number, since it uses as much as digits as its factorization.

1021310089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1021310089 is about 31957.9425026080. The cubic root of 1021310089 is about 1007.0534942443.

It can be divided in two parts, 10213 and 10089, that added together give a palindrome (20302).

The spelling of 1021310089 in words is "one billion, twenty-one million, three hundred ten thousand, eighty-nine".