320823442 has 8 divisors (see below), whose sum is σ = 492972732. Its totient is φ = 156499200.

The previous prime is 320823427. The next prime is 320823479. The reversal of 320823442 is 244328023.

It can be written as a sum of positive squares in 2 ways, for example, as 291760561 + 29062881 = 17081^2 + 5391^2 .

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 320823442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956159 + ... + 1956322.

Almost surely, 2^320823442 is an apocalyptic number.

320823442 is a deficient number, since it is larger than the sum of its proper divisors (172149290).

320823442 is a wasteful number, since it uses less digits than its factorization.

320823442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912524.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 320823442 is about 17911.5449361578. The cubic root of 320823442 is about 684.5765703230.

The spelling of 320823442 in words is "three hundred twenty million, eight hundred twenty-three thousand, four hundred forty-two".