11721363 has 4 divisors (see below), whose sum is σ = 15628488. Its totient is φ = 7814240.

The previous prime is 11721349. The next prime is 11721371. The reversal of 11721363 is 36312711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36312711 = 3 ⋅12104237.

It is a cyclic number.

It is not a de Polignac number, because 11721363 - 2⁵ = 11721331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11721323) 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 in 3 ways as a sum of consecutive naturals, for example, 1953558 + ... + 1953563.

It is an arithmetic number, because the mean of its divisors is an integer number (3907122).

Almost surely, 2^11721363 is an apocalyptic number.

11721363 is a deficient number, since it is larger than the sum of its proper divisors (3907125).

11721363 is an equidigital number, since it uses as much as digits as its factorization.

11721363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907124.

The product of its digits is 756, while the sum is 24.

The square root of 11721363 is about 3423.6476162129. The cubic root of 11721363 is about 227.1569551111.

The spelling of 11721363 in words is "eleven million, seven hundred twenty-one thousand, three hundred sixty-three".