320063389 has 2 divisors, whose sum is σ = 320063390. Its totient is φ = 320063388.

The previous prime is 320063383. The next prime is 320063411. The reversal of 320063389 is 983360023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277056025 + 43007364 = 16645^2 + 6558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320063389 is a prime.

It is equal to p_17278432 and since 320063389 and 17278432 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320063383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160031694 + 160031695.

It is an arithmetic number, because the mean of its divisors is an integer number (160031695).

Almost surely, 2^320063389 is an apocalyptic number.

It is an amenable number.

320063389 is a deficient number, since it is larger than the sum of its proper divisors (1).

320063389 is an equidigital number, since it uses as much as digits as its factorization.

320063389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 320063389 is about 17890.3155086768. The cubic root of 320063389 is about 684.0355397160.

The spelling of 320063389 in words is "three hundred twenty million, sixty-three thousand, three hundred eighty-nine".