320234391 has 14 divisors (see below), whose sum is σ = 480133040. Its totient is φ = 213489108.

The previous prime is 320234377. The next prime is 320234399. The reversal of 320234391 is 193432023.

It is a happy number.

It is not a de Polignac number, because 320234391 - 2¹³ = 320226199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320234399) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 218911 + ... + 220368.

Almost surely, 2^320234391 is an apocalyptic number.

320234391 is a deficient number, since it is larger than the sum of its proper divisors (159898649).

320234391 is an frugal number, since it uses more digits than its factorization.

320234391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439297 (or 439282 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 320234391 is about 17895.0940483698. The cubic root of 320234391 is about 684.1573391511.

The spelling of 320234391 in words is "three hundred twenty million, two hundred thirty-four thousand, three hundred ninety-one".