1308813 has 16 divisors (see below), whose sum is σ = 2016576. Its totient is φ = 746240.

The previous prime is 1308803. The next prime is 1308829. The reversal of 1308813 is 3188031.

It is not a de Polignac number, because 1308813 - 2⁸ = 1308557 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (126036).

2^1308813 is an apocalyptic number.

It is an amenable number.

1308813 is a deficient number, since it is larger than the sum of its proper divisors (707763).

1308813 is a wasteful number, since it uses less digits than its factorization.

1308813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1308813 is about 1144.0336533512. The cubic root of 1308813 is about 109.3853598894.

The spelling of 1308813 in words is "one million, three hundred eight thousand, eight hundred thirteen".