1207312 has 20 divisors (see below), whose sum is σ = 2379436. Its totient is φ = 593280.

The previous prime is 1207309. The next prime is 1207313. The reversal of 1207312 is 2137021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 404496 + 802816 = 636^2 + 896^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1207313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358 + ... + 1594.

2^1207312 is an apocalyptic number.

It is an amenable number.

1207312 is a deficient number, since it is larger than the sum of its proper divisors (1172124).

1207312 is a wasteful number, since it uses less digits than its factorization.

1207312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1207312 is about 1098.7775024999. Note that the first 3 decimals coincide. The cubic root of 1207312 is about 106.4812577685.

1207312 divided by its sum of digits (16) gives a palindrome (75457).

The spelling of 1207312 in words is "one million, two hundred seven thousand, three hundred twelve".