320090317 has 2 divisors, whose sum is σ = 320090318. Its totient is φ = 320090316.

The previous prime is 320090291. The next prime is 320090347. The reversal of 320090317 is 713090023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232593001 + 87497316 = 15251^2 + 9354^2 .

It is an emirp because it is prime and its reverse (713090023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320090317 - 2¹⁹ = 319566029 is a prime.

It is a super-2 number, since 2×320090317² = 204915622074320978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320090291 and 320090300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320090347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160045158 + 160045159.

It is an arithmetic number, because the mean of its divisors is an integer number (160045159).

Almost surely, 2^320090317 is an apocalyptic number.

It is an amenable number.

320090317 is a deficient number, since it is larger than the sum of its proper divisors (1).

320090317 is an equidigital number, since it uses as much as digits as its factorization.

320090317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 320090317 is about 17891.0680787928. The cubic root of 320090317 is about 684.0547225749.

The spelling of 320090317 in words is "three hundred twenty million, ninety thousand, three hundred seventeen".