123320032 has 48 divisors (see below), whose sum is σ = 278812800. Its totient is φ = 53101440.

The previous prime is 123320003. The next prime is 123320033. The reversal of 123320032 is 230023321.

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 = 123319988 and 123320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123320033) 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, 2532 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (5808600).

Almost surely, 2^123320032 is an apocalyptic number.

It is an amenable number.

123320032 is an abundant number, since it is smaller than the sum of its proper divisors (155492768).

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

123320032 is a wasteful number, since it uses less digits than its factorization.

123320032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18479 (or 18471 counting only the distinct ones).

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

The square root of 123320032 is about 11104.9552903197. The cubic root of 123320032 is about 497.7499322457.

Adding to 123320032 its reverse (230023321), we get a palindrome (353343353).

The spelling of 123320032 in words is "one hundred twenty-three million, three hundred twenty thousand, thirty-two".