11703821 has 2 divisors, whose sum is σ = 11703822. Its totient is φ = 11703820.

The previous prime is 11703817. The next prime is 11703827. The reversal of 11703821 is 12830711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 346921 = 3370^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 11703821 - 2² = 11703817 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11703827) 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 as a sum of consecutive naturals, namely, 5851910 + 5851911.

It is an arithmetic number, because the mean of its divisors is an integer number (5851911).

Almost surely, 2^11703821 is an apocalyptic number.

It is an amenable number.

11703821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11703821 is an equidigital number, since it uses as much as digits as its factorization.

11703821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11703821 is about 3421.0847694847. The cubic root of 11703821 is about 227.0435787396.

The spelling of 11703821 in words is "eleven million, seven hundred three thousand, eight hundred twenty-one".