11785321 has 2 divisors, whose sum is σ = 11785322. Its totient is φ = 11785320.

The previous prime is 11785313. The next prime is 11785337. The reversal of 11785321 is 12358711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 3748096 = 2835^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 11785321 - 2³ = 11785313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11785321.

It is not a weakly prime, because it can be changed into another prime (11785021) 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 as a sum of consecutive naturals, namely, 5892660 + 5892661.

It is an arithmetic number, because the mean of its divisors is an integer number (5892661).

Almost surely, 2^11785321 is an apocalyptic number.

It is an amenable number.

11785321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11785321 is an equidigital number, since it uses as much as digits as its factorization.

11785321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 11785321 is about 3432.9755315178. The cubic root of 11785321 is about 227.5693690162.

The spelling of 11785321 in words is "eleven million, seven hundred eighty-five thousand, three hundred twenty-one".