123230320 has 40 divisors (see below), whose sum is σ = 298971936. Its totient is φ = 47148288.

The previous prime is 123230299. The next prime is 123230321. The reversal of 123230320 is 23032321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 123230294 and 123230303.

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 7 ways as a sum of consecutive naturals, for example, 31647 + ... + 35326.

Almost surely, 2^123230320 is an apocalyptic number.

123230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123230320 is an abundant number, since it is smaller than the sum of its proper divisors (175741616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123230320 is a wasteful number, since it uses less digits than its factorization.

123230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67009 (or 67003 counting only the distinct ones).

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

The square root of 123230320 is about 11100.9152775796. The cubic root of 123230320 is about 497.6292030779.

Adding to 123230320 its reverse (23032321), we get a palindrome (146262641).

The spelling of 123230320 in words is "one hundred twenty-three million, two hundred thirty thousand, three hundred twenty".