320875881 has 16 divisors (see below), whose sum is σ = 438990720. Its totient is φ = 208356480.

The previous prime is 320875853. The next prime is 320875957. The reversal of 320875881 is 188578023.

It is a happy number.

It is not a de Polignac number, because 320875881 - 2¹⁰ = 320874857 is a prime.

It is a super-2 number, since 2×320875881² = 205922662015052322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320875831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88380 + ... + 91938.

It is an arithmetic number, because the mean of its divisors is an integer number (27436920).

Almost surely, 2^320875881 is an apocalyptic number.

It is an amenable number.

320875881 is a deficient number, since it is larger than the sum of its proper divisors (118114839).

320875881 is a wasteful number, since it uses less digits than its factorization.

320875881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 320875881 is about 17913.0087087569. The cubic root of 320875881 is about 684.6138665950.

The spelling of 320875881 in words is "three hundred twenty million, eight hundred seventy-five thousand, eight hundred eighty-one".