11315621 has 8 divisors (see below), whose sum is σ = 11949600. Its totient is φ = 10685520.

The previous prime is 11315611. The next prime is 11315641. The reversal of 11315621 is 12651311.

11315621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11315621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11315593 and 11315602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11315611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6626 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (1493700).

Almost surely, 2^11315621 is an apocalyptic number.

It is an amenable number.

11315621 is a deficient number, since it is larger than the sum of its proper divisors (633979).

11315621 is a wasteful number, since it uses less digits than its factorization.

11315621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939.

The product of its digits is 180, while the sum is 20.

The square root of 11315621 is about 3363.8699439782. The cubic root of 11315621 is about 224.5050585580.

Adding to 11315621 its reverse (12651311), we get a palindrome (23966932).

The spelling of 11315621 in words is "eleven million, three hundred fifteen thousand, six hundred twenty-one".