11313021 has 4 divisors (see below), whose sum is σ = 15084032. Its totient is φ = 7542012.

The previous prime is 11312993. The next prime is 11313059. The reversal of 11313021 is 12031311.

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.

It is not a de Polignac number, because 11313021 - 2⁷ = 11312893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11312988 and 11313006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885501 + ... + 1885506.

It is an arithmetic number, because the mean of its divisors is an integer number (3771008).

Almost surely, 2^11313021 is an apocalyptic number.

It is an amenable number.

11313021 is a deficient number, since it is larger than the sum of its proper divisors (3771011).

11313021 is an equidigital number, since it uses as much as digits as its factorization.

11313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771010.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11313021 is about 3363.4834621267. The cubic root of 11313021 is about 224.4878623339.

Adding to 11313021 its reverse (12031311), we get a palindrome (23344332).

The spelling of 11313021 in words is "eleven million, three hundred thirteen thousand, twenty-one".