90320317 has 2 divisors, whose sum is σ = 90320318. Its totient is φ = 90320316.

The previous prime is 90320311. The next prime is 90320369. The reversal of 90320317 is 71302309.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88717561 + 1602756 = 9419^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 90320317 - 2¹¹ = 90318269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90320291 and 90320300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90320311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45160158 + 45160159.

It is an arithmetic number, because the mean of its divisors is an integer number (45160159).

Almost surely, 2^90320317 is an apocalyptic number.

It is an amenable number.

90320317 is a deficient number, since it is larger than the sum of its proper divisors (1).

90320317 is an equidigital number, since it uses as much as digits as its factorization.

90320317 is an odious number, because the sum of its binary digits is odd.

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

The square root of 90320317 is about 9503.7001741427. The cubic root of 90320317 is about 448.6715007669.

The spelling of 90320317 in words is "ninety million, three hundred twenty thousand, three hundred seventeen".