320040271 has 4 divisors (see below), whose sum is σ = 327483112. Its totient is φ = 312597432.

The previous prime is 320040251. The next prime is 320040277. The reversal of 320040271 is 172040023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320040271 - 2¹⁵ = 320007503 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 (320040277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3721356 + ... + 3721441.

It is an arithmetic number, because the mean of its divisors is an integer number (81870778).

Almost surely, 2^320040271 is an apocalyptic number.

320040271 is a deficient number, since it is larger than the sum of its proper divisors (7442841).

320040271 is an equidigital number, since it uses as much as digits as its factorization.

320040271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442840.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 320040271 is about 17889.6693932560. The cubic root of 320040271 is about 684.0190701510.

Adding to 320040271 its reverse (172040023), we get a palindrome (492080294).

The spelling of 320040271 in words is "three hundred twenty million, forty thousand, two hundred seventy-one".