11863321 has 2 divisors, whose sum is σ = 11863322. Its totient is φ = 11863320.

The previous prime is 11863301. The next prime is 11863337. The reversal of 11863321 is 12336811.

11863321 = 2435² + 2436².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5934096 + 5929225 = 2436^2 + 2435^2 .

It is an emirp because it is prime and its reverse (12336811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11863321 - 2⁵ = 11863289 is a prime.

It is not a weakly prime, because it can be changed into another prime (11863301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5931660 + 5931661.

It is an arithmetic number, because the mean of its divisors is an integer number (5931661).

Almost surely, 2^11863321 is an apocalyptic number.

11863321 is the 2436-th centered square number.

It is an amenable number.

11863321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11863321 is an equidigital number, since it uses as much as digits as its factorization.

11863321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 11863321 is about 3444.3172037430. The cubic root of 11863321 is about 228.0703140576.

The spelling of 11863321 in words is "eleven million, eight hundred sixty-three thousand, three hundred twenty-one".