320818226 has 4 divisors (see below), whose sum is σ = 481227342. Its totient is φ = 160409112.

The previous prime is 320818217. The next prime is 320818229. The reversal of 320818226 is 622818023.

320818226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622818023 = 6949 ⋅89627.

It can be written as a sum of positive squares in only one way, i.e., 308037601 + 12780625 = 17551^2 + 3575^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320818192 and 320818201.

It is not an unprimeable number, because it can be changed into a prime (320818229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80204555 + ... + 80204558.

Almost surely, 2^320818226 is an apocalyptic number.

320818226 is a deficient number, since it is larger than the sum of its proper divisors (160409116).

320818226 is a wasteful number, since it uses less digits than its factorization.

320818226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160409115.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 320818226 is about 17911.3993311522. The cubic root of 320818226 is about 684.5728603169.

The spelling of 320818226 in words is "three hundred twenty million, eight hundred eighteen thousand, two hundred twenty-six".