231020323 has 4 divisors (see below), whose sum is σ = 231130368. Its totient is φ = 230910280.

The previous prime is 231020311. The next prime is 231020329. The reversal of 231020323 is 323020132.

231020323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231020323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231020297 and 231020306.

It is not an unprimeable number, because it can be changed into a prime (231020329) 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, 51811 + ... + 56092.

It is an arithmetic number, because the mean of its divisors is an integer number (57782592).

Almost surely, 2^231020323 is an apocalyptic number.

231020323 is a deficient number, since it is larger than the sum of its proper divisors (110045).

231020323 is a wasteful number, since it uses less digits than its factorization.

231020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110044.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 231020323 is about 15199.3527164811. The cubic root of 231020323 is about 613.5972373360.

Adding to 231020323 its reverse (323020132), we get a palindrome (554040455).

The spelling of 231020323 in words is "two hundred thirty-one million, twenty thousand, three hundred twenty-three".