123213320 has 32 divisors (see below), whose sum is σ = 283132800. Its totient is φ = 48235968.

The previous prime is 123213289. The next prime is 123213401. The reversal of 123213320 is 23312321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30890 + ... + 34649.

It is an arithmetic number, because the mean of its divisors is an integer number (8847900).

Almost surely, 2^123213320 is an apocalyptic number.

123213320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123213320 is an abundant number, since it is smaller than the sum of its proper divisors (159919480).

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

123213320 is a wasteful number, since it uses less digits than its factorization.

123213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65597 (or 65593 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123213320 is about 11100.1495485421. The cubic root of 123213320 is about 497.6063188681.

Adding to 123213320 its reverse (23312321), we get a palindrome (146525641).

Subtracting from 123213320 its reverse (23312321), we obtain a palindrome (99900999).

The spelling of 123213320 in words is "one hundred twenty-three million, two hundred thirteen thousand, three hundred twenty".