123287516 has 24 divisors (see below), whose sum is σ = 236159616. Its totient is φ = 55851120.

The previous prime is 123287513. The next prime is 123287531. The reversal of 123287516 is 615782321.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123287513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8945 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (9839984).

Almost surely, 2^123287516 is an apocalyptic number.

It is an amenable number.

123287516 is a deficient number, since it is larger than the sum of its proper divisors (112872100).

123287516 is a wasteful number, since it uses less digits than its factorization.

123287516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9447 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 123287516 is about 11103.4911626929. The cubic root of 123287516 is about 497.7061808799.

The spelling of 123287516 in words is "one hundred twenty-three million, two hundred eighty-seven thousand, five hundred sixteen".