1286313 has 8 divisors (see below), whose sum is σ = 1960128. Its totient is φ = 735024.

The previous prime is 1286303. The next prime is 1286323. The reversal of 1286313 is 3136821.

It is an interprime number because it is at equal distance from previous prime (1286303) and next prime (1286323).

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

It is not a de Polignac number, because 1286313 - 2¹⁰ = 1285289 is a prime.

It is a super-2 number, since 2×1286313² = 3309202267938, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1286303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30606 + ... + 30647.

It is an arithmetic number, because the mean of its divisors is an integer number (245016).

2^1286313 is an apocalyptic number.

It is an amenable number.

1286313 is a deficient number, since it is larger than the sum of its proper divisors (673815).

1286313 is an equidigital number, since it uses as much as digits as its factorization.

1286313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61263.

The product of its digits is 864, while the sum is 24.

The square root of 1286313 is about 1134.1573964843. The cubic root of 1286313 is about 108.7549132408.

It can be divided in two parts, 128 and 6313, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 1286313 in words is "one million, two hundred eighty-six thousand, three hundred thirteen".