123669312 has 56 divisors (see below), whose sum is σ = 352385376. Its totient is φ = 38051328.

The previous prime is 123669307. The next prime is 123669313. The reversal of 123669312 is 213966321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123669313) by changing a digit.

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, 22278 + ... + 27269.

It is an arithmetic number, because the mean of its divisors is an integer number (6292596).

Almost surely, 2^123669312 is an apocalyptic number.

123669312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123669312 is an abundant number, since it is smaller than the sum of its proper divisors (228716064).

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

123669312 is a wasteful number, since it uses less digits than its factorization.

123669312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49575 (or 49565 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 123669312 is about 11120.6704833836. The cubic root of 123669312 is about 498.2194159009.

The spelling of 123669312 in words is "one hundred twenty-three million, six hundred sixty-nine thousand, three hundred twelve".