123245312 has 36 divisors (see below), whose sum is σ = 246800736. Its totient is φ = 61424640.

The previous prime is 123245249. The next prime is 123245357. The reversal of 123245312 is 213542321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109778 + ... + 110894.

It is an arithmetic number, because the mean of its divisors is an integer number (6855576).

Almost surely, 2^123245312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123245312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123400368).

123245312 is an abundant number, since it is smaller than the sum of its proper divisors (123555424).

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

123245312 is an equidigital number, since it uses as much as digits as its factorization.

123245312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1550 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 123245312 is about 11101.5905166782. The cubic root of 123245312 is about 497.6493825123.

Adding to 123245312 its reverse (213542321), we get a palindrome (336787633).

The spelling of 123245312 in words is "one hundred twenty-three million, two hundred forty-five thousand, three hundred twelve".