311664601 has 2 divisors, whose sum is σ = 311664602. Its totient is φ = 311664600.

The previous prime is 311664583. The next prime is 311664623. The reversal of 311664601 is 106466113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172896201 + 138768400 = 13149^2 + 11780^2 .

It is a cyclic number.

It is not a de Polignac number, because 311664601 - 2⁵ = 311664569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311664601.

It is not a weakly prime, because it can be changed into another prime (311664701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155832300 + 155832301.

It is an arithmetic number, because the mean of its divisors is an integer number (155832301).

Almost surely, 2^311664601 is an apocalyptic number.

It is an amenable number.

311664601 is a deficient number, since it is larger than the sum of its proper divisors (1).

311664601 is an equidigital number, since it uses as much as digits as its factorization.

311664601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 311664601 is about 17654.0250651233. The cubic root of 311664601 is about 677.9991653676. Note that the first 3 decimals are identical.

The spelling of 311664601 in words is "three hundred eleven million, six hundred sixty-four thousand, six hundred one".