320112311 has 4 divisors (see below), whose sum is σ = 320156232. Its totient is φ = 320068392.

The previous prime is 320112283. The next prime is 320112341. The reversal of 320112311 is 113211023.

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 320112311 - 2¹⁰ = 320111287 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 (320112341) 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, 8120 + ... + 26573.

It is an arithmetic number, because the mean of its divisors is an integer number (80039058).

Almost surely, 2^320112311 is an apocalyptic number.

320112311 is a deficient number, since it is larger than the sum of its proper divisors (43921).

320112311 is an equidigital number, since it uses as much as digits as its factorization.

320112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43920.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 320112311 is about 17891.6827324877. The cubic root of 320112311 is about 684.0703897728.

Adding to 320112311 its reverse (113211023), we get a palindrome (433323334).

The spelling of 320112311 in words is "three hundred twenty million, one hundred twelve thousand, three hundred eleven".