1306983 has 4 divisors (see below), whose sum is σ = 1742648. Its totient is φ = 871320.

The previous prime is 1306979. The next prime is 1306997. The reversal of 1306983 is 3896031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1306983 - 2² = 1306979 is a prime.

It is a D-number.

It is a Duffinian number.

1306983 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1306983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217828 + ... + 217833.

It is an arithmetic number, because the mean of its divisors is an integer number (435662).

2^1306983 is an apocalyptic number.

1306983 is a deficient number, since it is larger than the sum of its proper divisors (435665).

1306983 is an equidigital number, since it uses as much as digits as its factorization.

1306983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435664.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1306983 is about 1143.2335719353. The cubic root of 1306983 is about 109.3343547479.

The spelling of 1306983 in words is "one million, three hundred six thousand, nine hundred eighty-three".