123453312 has 64 divisors (see below), whose sum is σ = 336824400. Its totient is φ = 40034304.

The previous prime is 123453307. The next prime is 123453331. The reversal of 123453312 is 213354321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 9864 + ... + 18552.

Almost surely, 2^123453312 is an apocalyptic number.

123453312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123453312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168412200).

123453312 is an abundant number, since it is smaller than the sum of its proper divisors (213371088).

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

123453312 is an equidigital number, since it uses as much as digits as its factorization.

123453312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743 (or 8731 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 123453312 is about 11110.9545944532. The cubic root of 123453312 is about 497.9291846210.

The spelling of 123453312 in words is "one hundred twenty-three million, four hundred fifty-three thousand, three hundred twelve".