123445312 has 28 divisors (see below), whose sum is σ = 250179840. Its totient is φ = 60407936.

The previous prime is 123445291. The next prime is 123445349. The reversal of 123445312 is 213544321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17512 + ... + 23527.

Almost surely, 2^123445312 is an apocalyptic number.

It is an amenable number.

123445312 is an abundant number, since it is smaller than the sum of its proper divisors (126734528).

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

123445312 is an equidigital number, since it uses as much as digits as its factorization.

123445312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41098 (or 41088 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 123445312 is about 11110.5945835495. The cubic root of 123445312 is about 497.9184288152.

Adding to 123445312 its reverse (213544321), we get a palindrome (336989633).

Subtracting 123445312 from its reverse (213544321), we obtain a palindrome (90099009).

The spelling of 123445312 in words is "one hundred twenty-three million, four hundred forty-five thousand, three hundred twelve".