123230311 has 4 divisors (see below), whose sum is σ = 124117000. Its totient is φ = 122343624.

The previous prime is 123230299. The next prime is 123230321. The reversal of 123230311 is 113032321.

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 123230311 - 2⁵ = 123230279 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 (123230321) 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, 443136 + ... + 443413.

It is an arithmetic number, because the mean of its divisors is an integer number (31029250).

Almost surely, 2^123230311 is an apocalyptic number.

123230311 is a deficient number, since it is larger than the sum of its proper divisors (886689).

123230311 is an equidigital number, since it uses as much as digits as its factorization.

123230311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886688.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123230311 is about 11100.9148722076. The cubic root of 123230311 is about 497.6291909633.

Adding to 123230311 its reverse (113032321), we get a palindrome (236262632).

It can be divided in two parts, 12 and 3230311, that added together give a palindrome (3230323).

The spelling of 123230311 in words is "one hundred twenty-three million, two hundred thirty thousand, three hundred eleven".