320427191 has 48 divisors (see below), whose sum is σ = 419443200. Its totient is φ = 238645440.

The previous prime is 320427187. The next prime is 320427199. The reversal of 320427191 is 191724023.

It is not a de Polignac number, because 320427191 - 2² = 320427187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320427199) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2939645 + ... + 2939753.

It is an arithmetic number, because the mean of its divisors is an integer number (8738400).

Almost surely, 2^320427191 is an apocalyptic number.

320427191 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

320427191 is a deficient number, since it is larger than the sum of its proper divisors (99016009).

320427191 is a wasteful number, since it uses less digits than its factorization.

320427191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 320427191 is about 17900.4801890899. The cubic root of 320427191 is about 684.2946126357.

The spelling of 320427191 in words is "three hundred twenty million, four hundred twenty-seven thousand, one hundred ninety-one".