123302320 has 20 divisors (see below), whose sum is σ = 286678080. Its totient is φ = 49320896.

The previous prime is 123302317. The next prime is 123302321. The reversal of 123302320 is 23203321.

It is a tau number, because it is divible by the number of its divisors (20).

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 = 123302294 and 123302303.

It is not an unprimeable number, because it can be changed into a prime (123302321) 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, 770560 + ... + 770719.

It is an arithmetic number, because the mean of its divisors is an integer number (14333904).

Almost surely, 2^123302320 is an apocalyptic number.

123302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123302320 is an abundant number, since it is smaller than the sum of its proper divisors (163375760).

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

123302320 is a wasteful number, since it uses less digits than its factorization.

123302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541292 (or 1541286 counting only the distinct ones).

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

The square root of 123302320 is about 11104.1577798589. The cubic root of 123302320 is about 497.7261011110.

Adding to 123302320 its reverse (23203321), we get a palindrome (146505641).

The spelling of 123302320 in words is "one hundred twenty-three million, three hundred two thousand, three hundred twenty".