320873091 has 32 divisors (see below), whose sum is σ = 534643200. Its totient is φ = 166298880.

The previous prime is 320873071. The next prime is 320873101. The reversal of 320873091 is 190378023.

It is not a de Polignac number, because 320873091 - 2⁶ = 320873027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (320873071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116215 + ... + 118943.

It is an arithmetic number, because the mean of its divisors is an integer number (16707600).

Almost surely, 2^320873091 is an apocalyptic number.

320873091 is a deficient number, since it is larger than the sum of its proper divisors (213770109).

320873091 is a wasteful number, since it uses less digits than its factorization.

320873091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 320873091 is about 17912.9308322228. The cubic root of 320873091 is about 684.6118823613.

The spelling of 320873091 in words is "three hundred twenty million, eight hundred seventy-three thousand, ninety-one".