320423311 has 4 divisors (see below), whose sum is σ = 345071272. Its totient is φ = 295775352.

The previous prime is 320423273. The next prime is 320423339. The reversal of 320423311 is 113324023.

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 320423311 - 2⁷ = 320423183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320423381) 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, 12323961 + ... + 12323986.

It is an arithmetic number, because the mean of its divisors is an integer number (86267818).

Almost surely, 2^320423311 is an apocalyptic number.

320423311 is a deficient number, since it is larger than the sum of its proper divisors (24647961).

320423311 is a wasteful number, since it uses less digits than its factorization.

320423311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24647960.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320423311 is about 17900.3718117809. The cubic root of 320423311 is about 684.2918506210.

Adding to 320423311 its reverse (113324023), we get a palindrome (433747334).

It can be divided in two parts, 32042 and 3311, that added together give a palindrome (35353).

The spelling of 320423311 in words is "three hundred twenty million, four hundred twenty-three thousand, three hundred eleven".