11818313 has 8 divisors (see below), whose sum is σ = 12854856. Its totient is φ = 10800000.

The previous prime is 11818309. The next prime is 11818327. The reversal of 11818313 is 31381811.

It can be written as a sum of positive squares in 4 ways, for example, as 1138489 + 10679824 = 1067^2 + 3268^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11818313 - 2² = 11818309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11818333) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3188 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (1606857).

Almost surely, 2^11818313 is an apocalyptic number.

11818313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11818313 is a deficient number, since it is larger than the sum of its proper divisors (1036543).

11818313 is a wasteful number, since it uses less digits than its factorization.

11818313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115.

The product of its digits is 576, while the sum is 26.

The square root of 11818313 is about 3437.7773342670. Note that the first 3 decimals coincide. The cubic root of 11818313 is about 227.7815248420.

The spelling of 11818313 in words is "eleven million, eight hundred eighteen thousand, three hundred thirteen".