11821713 has 8 divisors (see below), whose sum is σ = 15984576. Its totient is φ = 7770000.

The previous prime is 11821699. The next prime is 11821717. The reversal of 11821713 is 31712811.

It is a happy number.

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

It is not a de Polignac number, because 11821713 - 2¹⁴ = 11805329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11821717) 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, 27538 + ... + 27963.

It is an arithmetic number, because the mean of its divisors is an integer number (1998072).

Almost surely, 2^11821713 is an apocalyptic number.

It is an amenable number.

11821713 is a deficient number, since it is larger than the sum of its proper divisors (4162863).

11821713 is an equidigital number, since it uses as much as digits as its factorization.

11821713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55575.

The product of its digits is 336, while the sum is 24.

The square root of 11821713 is about 3438.2718042645. The cubic root of 11821713 is about 227.8033661693.

The spelling of 11821713 in words is "eleven million, eight hundred twenty-one thousand, seven hundred thirteen".