1313278 has 8 divisors (see below), whose sum is σ = 2023272. Its totient is φ = 638856.

The previous prime is 1313239. The next prime is 1313293. The reversal of 1313278 is 8723131.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800 + ... + 8947.

It is an arithmetic number, because the mean of its divisors is an integer number (252909).

2^1313278 is an apocalyptic number.

1313278 is a deficient number, since it is larger than the sum of its proper divisors (709994).

1313278 is a wasteful number, since it uses less digits than its factorization.

1313278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17786.

The product of its digits is 1008, while the sum is 25.

The square root of 1313278 is about 1145.9834204734. The cubic root of 1313278 is about 109.5096076583.

The spelling of 1313278 in words is "one million, three hundred thirteen thousand, two hundred seventy-eight".