11317621 has 4 divisors (see below), whose sum is σ = 12934432. Its totient is φ = 9700812.

The previous prime is 11317577. The next prime is 11317651. The reversal of 11317621 is 12671311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12671311 = 2011 ⋅6301.

It is a cyclic number.

It is not a de Polignac number, because 11317621 - 2¹⁹ = 10793333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11317592 and 11317601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11317651) 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, 808395 + ... + 808408.

It is an arithmetic number, because the mean of its divisors is an integer number (3233608).

Almost surely, 2^11317621 is an apocalyptic number.

It is an amenable number.

11317621 is a deficient number, since it is larger than the sum of its proper divisors (1616811).

11317621 is an equidigital number, since it uses as much as digits as its factorization.

11317621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616810.

The product of its digits is 252, while the sum is 22.

The square root of 11317621 is about 3364.1672074973. The cubic root of 11317621 is about 224.5182846304.

Adding to 11317621 its reverse (12671311), we get a palindrome (23988932).

The spelling of 11317621 in words is "eleven million, three hundred seventeen thousand, six hundred twenty-one".