320231623 has 4 divisors (see below), whose sum is σ = 320961520. Its totient is φ = 319501728.

The previous prime is 320231591. The next prime is 320231627. The reversal of 320231623 is 326132023.

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 320231623 - 2⁵ = 320231591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320231594 and 320231603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320231627) 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, 364290 + ... + 365167.

It is an arithmetic number, because the mean of its divisors is an integer number (80240380).

Almost surely, 2^320231623 is an apocalyptic number.

320231623 is a deficient number, since it is larger than the sum of its proper divisors (729897).

320231623 is an equidigital number, since it uses as much as digits as its factorization.

320231623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729896.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 320231623 is about 17895.0167085700. The cubic root of 320231623 is about 684.1553679356.

Adding to 320231623 its reverse (326132023), we get a palindrome (646363646).

The spelling of 320231623 in words is "three hundred twenty million, two hundred thirty-one thousand, six hundred twenty-three".