123235320 has 128 divisors (see below), whose sum is σ = 401163840. Its totient is φ = 30105600.

The previous prime is 123235319. The next prime is 123235351. The reversal of 123235320 is 23532321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307120 + ... + 307520.

Almost surely, 2^123235320 is an apocalyptic number.

123235320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123235320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200581920).

123235320 is an abundant number, since it is smaller than the sum of its proper divisors (277928520).

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

123235320 is a wasteful number, since it uses less digits than its factorization.

123235320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 123235320 is about 11101.1404819505. The cubic root of 123235320 is about 497.6359333273.

Adding to 123235320 its reverse (23532321), we get a palindrome (146767641).

The spelling of 123235320 in words is "one hundred twenty-three million, two hundred thirty-five thousand, three hundred twenty".