320093621 has 2 divisors, whose sum is σ = 320093622. Its totient is φ = 320093620.

The previous prime is 320093617. The next prime is 320093633. The reversal of 320093621 is 126390023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211120900 + 108972721 = 14530^2 + 10439^2 .

It is an emirp because it is prime and its reverse (126390023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320093621 - 2² = 320093617 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320090621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160046810 + 160046811.

It is an arithmetic number, because the mean of its divisors is an integer number (160046811).

Almost surely, 2^320093621 is an apocalyptic number.

It is an amenable number.

320093621 is a deficient number, since it is larger than the sum of its proper divisors (1).

320093621 is an equidigital number, since it uses as much as digits as its factorization.

320093621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 320093621 is about 17891.1604151324. The cubic root of 320093621 is about 684.0570761908.

The spelling of 320093621 in words is "three hundred twenty million, ninety-three thousand, six hundred twenty-one".