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11121313 = 71588759

11121313 has 4 divisors (see below), whose sum is σ = 12710080. Its totient is φ = 9532548.

The previous prime is 11121307. The next prime is 11121329. The reversal of 11121313 is 31312111.

Adding to 11121313 its reverse (31312111), we get a palindrome (42433424).

11121313 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 31312111 = 281111431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11121313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121293 and 11121302.

It is not an unprimeable number, because it can be changed into a prime (11121353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794373 + ... + 794386.

It is an arithmetic number, because the mean of its divisors is an integer number (3177520).

Almost surely, 211121313 is an apocalyptic number.

It is an amenable number.

11121313 is a deficient number, since it is larger than the sum of its proper divisors (1588767).

11121313 is an equidigital number, since it uses as much as digits as its factorization.

11121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588766.

The product of its digits is 18, while the sum is 13.

The square root of 11121313 is about 3334.8632655628. The cubic root of 11121313 is about 223.2125906084.

The spelling of 11121313 in words is "eleven million, one hundred twenty-one thousand, three hundred thirteen".

Divisors: 1 7 1588759 11121313