1312806 has 16 divisors (see below), whose sum is σ = 2864448. Its totient is φ = 397800.

The previous prime is 1312789. The next prime is 1312813. The reversal of 1312806 is 6082131.

It is a Curzon number.

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, 9880 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (179028).

2^1312806 is an apocalyptic number.

1312806 is an abundant number, since it is smaller than the sum of its proper divisors (1551642).

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

1312806 is a wasteful number, since it uses less digits than its factorization.

1312806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19907.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1312806 is about 1145.7774653047. Note that the first 3 decimals coincide. The cubic root of 1312806 is about 109.4964866161.

Adding to 1312806 its reverse (6082131), we get a palindrome (7394937).

The spelling of 1312806 in words is "one million, three hundred twelve thousand, eight hundred six".