320404233 has 8 divisors (see below), whose sum is σ = 427303296. Its totient is φ = 213554000.

The previous prime is 320404211. The next prime is 320404243. The reversal of 320404233 is 332404023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320404233 - 2¹² = 320400137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320404243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7783 + ... + 26483.

It is an arithmetic number, because the mean of its divisors is an integer number (53412912).

Almost surely, 2^320404233 is an apocalyptic number.

It is an amenable number.

320404233 is a deficient number, since it is larger than the sum of its proper divisors (106899063).

320404233 is a wasteful number, since it uses less digits than its factorization.

320404233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24415.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 320404233 is about 17899.8389098897. The cubic root of 320404233 is about 684.2782694420.

Adding to 320404233 its reverse (332404023), we get a palindrome (652808256).

The spelling of 320404233 in words is "three hundred twenty million, four hundred four thousand, two hundred thirty-three".