123215304 has 32 divisors (see below), whose sum is σ = 324252000. Its totient is φ = 38909952.

The previous prime is 123215227. The next prime is 123215321. The reversal of 123215304 is 403512321.

It is a super-2 number, since 2×123215304² = 30364022279624832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134649 + ... + 135560.

It is an arithmetic number, because the mean of its divisors is an integer number (10132875).

Almost surely, 2^123215304 is an apocalyptic number.

It is an amenable number.

123215304 is an abundant number, since it is smaller than the sum of its proper divisors (201036696).

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

123215304 is a wasteful number, since it uses less digits than its factorization.

123215304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270237 (or 270233 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123215304 is about 11100.2389163477. The cubic root of 123215304 is about 497.6089896985.

Adding to 123215304 its reverse (403512321), we get a palindrome (526727625).

The spelling of 123215304 in words is "one hundred twenty-three million, two hundred fifteen thousand, three hundred four".