123319456 has 24 divisors (see below), whose sum is σ = 261461844. Its totient is φ = 56916480.

The previous prime is 123319451. The next prime is 123319487. The reversal of 123319456 is 654913321.

It can be written as a sum of positive squares in 2 ways, for example, as 91011600 + 32307856 = 9540^2 + 5684^2 .

It is not an unprimeable number, because it can be changed into a prime (123319451) 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 3 ways as a sum of consecutive naturals, for example, 147805 + ... + 148636.

Almost surely, 2^123319456 is an apocalyptic number.

123319456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123319456 is an abundant number, since it is smaller than the sum of its proper divisors (138142388).

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

123319456 is a wasteful number, since it uses less digits than its factorization.

123319456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296464 (or 296456 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 123319456 is about 11104.9293559212. The cubic root of 123319456 is about 497.7491572854.

The spelling of 123319456 in words is "one hundred twenty-three million, three hundred nineteen thousand, four hundred fifty-six".