1311946 has 8 divisors (see below), whose sum is σ = 2021220. Its totient is φ = 638208.

The previous prime is 1311923. The next prime is 1311967. The reversal of 1311946 is 6491131.

1311946 = 170² + 171² + ... + 206².

It can be written as a sum of positive squares in 2 ways, for example, as 1185921 + 126025 = 1089^2 + 355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1311946.

It is an unprimeable number.

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, 8791 + ... + 8938.

2^1311946 is an apocalyptic number.

1311946 is a deficient number, since it is larger than the sum of its proper divisors (709274).

1311946 is a wasteful number, since it uses less digits than its factorization.

1311946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17768.

The product of its digits is 648, while the sum is 25.

The square root of 1311946 is about 1145.4021127971. The cubic root of 1311946 is about 109.4725715445.

The spelling of 1311946 in words is "one million, three hundred eleven thousand, nine hundred forty-six".