231023123 has 4 divisors (see below), whose sum is σ = 232220328. Its totient is φ = 229825920.

The previous prime is 231023119. The next prime is 231023141. The reversal of 231023123 is 321320132.

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 231023123 - 2² = 231023119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231023423) 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, 598313 + ... + 598698.

It is an arithmetic number, because the mean of its divisors is an integer number (58055082).

Almost surely, 2^231023123 is an apocalyptic number.

231023123 is a deficient number, since it is larger than the sum of its proper divisors (1197205).

231023123 is a wasteful number, since it uses less digits than its factorization.

231023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197204.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231023123 is about 15199.4448253875. Note that the first 3 decimals coincide. The cubic root of 231023123 is about 613.5997162887.

Adding to 231023123 its reverse (321320132), we get a palindrome (552343255).

The spelling of 231023123 in words is "two hundred thirty-one million, twenty-three thousand, one hundred twenty-three".