310490689 has 2 divisors, whose sum is σ = 310490690. Its totient is φ = 310490688.

The previous prime is 310490683. The next prime is 310490693. The reversal of 310490689 is 986094013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 99660289 = 14520^2 + 9983^2 .

It is a cyclic number.

It is not a de Polignac number, because 310490689 - 2⁵ = 310490657 is a prime.

It is not a weakly prime, because it can be changed into another prime (310490683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155245344 + 155245345.

It is an arithmetic number, because the mean of its divisors is an integer number (155245345).

Almost surely, 2^310490689 is an apocalyptic number.

It is an amenable number.

310490689 is a deficient number, since it is larger than the sum of its proper divisors (1).

310490689 is an equidigital number, since it uses as much as digits as its factorization.

310490689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 310490689 is about 17620.7459830735. The cubic root of 310490689 is about 677.1468466251.

The spelling of 310490689 in words is "three hundred ten million, four hundred ninety thousand, six hundred eighty-nine".