320426233 has 2 divisors, whose sum is σ = 320426234. Its totient is φ = 320426232.

The previous prime is 320426221. The next prime is 320426257. The reversal of 320426233 is 332624023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305270784 + 15155449 = 17472^2 + 3893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320426233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320426198 and 320426207.

It is not a weakly prime, because it can be changed into another prime (320426333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160213116 + 160213117.

It is an arithmetic number, because the mean of its divisors is an integer number (160213117).

Almost surely, 2^320426233 is an apocalyptic number.

It is an amenable number.

320426233 is a deficient number, since it is larger than the sum of its proper divisors (1).

320426233 is an equidigital number, since it uses as much as digits as its factorization.

320426233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 320426233 is about 17900.4534300112. The cubic root of 320426233 is about 684.2939306764.

The spelling of 320426233 in words is "three hundred twenty million, four hundred twenty-six thousand, two hundred thirty-three".