320442279 has 16 divisors (see below), whose sum is σ = 446726400. Its totient is φ = 204316728.

The previous prime is 320442263. The next prime is 320442289. The reversal of 320442279 is 972244023.

It is not a de Polignac number, because 320442279 - 2⁴ = 320442263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320442229) 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, 32112 + ... + 40890.

It is an arithmetic number, because the mean of its divisors is an integer number (27920400).

Almost surely, 2^320442279 is an apocalyptic number.

320442279 is a deficient number, since it is larger than the sum of its proper divisors (126284121).

320442279 is an frugal number, since it uses more digits than its factorization.

320442279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851 (or 8805 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 320442279 is about 17900.9016253372. The cubic root of 320442279 is about 684.3053529591.

The spelling of 320442279 in words is "three hundred twenty million, four hundred forty-two thousand, two hundred seventy-nine".