320623057 has 4 divisors (see below), whose sum is σ = 323147776. Its totient is φ = 318098340.

The previous prime is 320623033. The next prime is 320623063. The reversal of 320623057 is 750326023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320623057 - 2¹⁵ = 320590289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320623087) by changing a digit.

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, 1262169 + ... + 1262422.

It is an arithmetic number, because the mean of its divisors is an integer number (80786944).

Almost surely, 2^320623057 is an apocalyptic number.

It is an amenable number.

320623057 is a deficient number, since it is larger than the sum of its proper divisors (2524719).

320623057 is a wasteful number, since it uses less digits than its factorization.

320623057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524718.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 320623057 is about 17905.9503238449. The cubic root of 320623057 is about 684.4340127369.

The spelling of 320623057 in words is "three hundred twenty million, six hundred twenty-three thousand, fifty-seven".