123247312 has 20 divisors (see below), whose sum is σ = 244617156. Its totient is φ = 60120320.

The previous prime is 123247307. The next prime is 123247367. The reversal of 123247312 is 213742321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62157456 + 61089856 = 7884^2 + 7816^2 .

It is a congruent number.

It is an unprimeable number.

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, 93283 + ... + 94594.

Almost surely, 2^123247312 is an apocalyptic number.

It is an amenable number.

123247312 is a deficient number, since it is larger than the sum of its proper divisors (121369844).

123247312 is a wasteful number, since it uses less digits than its factorization.

123247312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187926 (or 187920 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 123247312 is about 11101.6805934957. The cubic root of 123247312 is about 497.6520744156.

Adding to 123247312 its reverse (213742321), we get a palindrome (336989633).

The spelling of 123247312 in words is "one hundred twenty-three million, two hundred forty-seven thousand, three hundred twelve".