320323402 has 8 divisors (see below), whose sum is σ = 549125856. Its totient is φ = 137281452.

The previous prime is 320323351. The next prime is 320323411. The reversal of 320323402 is 204323023.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320323402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11440108 + ... + 11440135.

It is an arithmetic number, because the mean of its divisors is an integer number (68640732).

Almost surely, 2^320323402 is an apocalyptic number.

320323402 is a deficient number, since it is larger than the sum of its proper divisors (228802454).

320323402 is a wasteful number, since it uses less digits than its factorization.

320323402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22880252.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 320323402 is about 17897.5808979873. The cubic root of 320323402 is about 684.2207217746.

Adding to 320323402 its reverse (204323023), we get a palindrome (524646425).

The spelling of 320323402 in words is "three hundred twenty million, three hundred twenty-three thousand, four hundred two".