319922641 has 2 divisors, whose sum is σ = 319922642. Its totient is φ = 319922640.

The previous prime is 319922633. The next prime is 319922653. The reversal of 319922641 is 146229913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273737025 + 46185616 = 16545^2 + 6796^2 .

It is an emirp because it is prime and its reverse (146229913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 319922641 - 2³ = 319922633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 319922641.

It is not a weakly prime, because it can be changed into another prime (319922671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159961320 + 159961321.

It is an arithmetic number, because the mean of its divisors is an integer number (159961321).

Almost surely, 2^319922641 is an apocalyptic number.

It is an amenable number.

319922641 is a deficient number, since it is larger than the sum of its proper divisors (1).

319922641 is an equidigital number, since it uses as much as digits as its factorization.

319922641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 319922641 is about 17886.3814395198. The cubic root of 319922641 is about 683.9352567164.

The spelling of 319922641 in words is "three hundred nineteen million, nine hundred twenty-two thousand, six hundred forty-one".