11213715 has 16 divisors (see below), whose sum is σ = 18160128. Its totient is φ = 5907936.

The previous prime is 11213711. The next prime is 11213729. The reversal of 11213715 is 51731211.

It is a happy number.

It is not a de Polignac number, because 11213715 - 2² = 11213711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11213691 and 11213700.

It is not an unprimeable number, because it can be changed into a prime (11213711) 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 15 ways as a sum of consecutive naturals, for example, 3259 + ... + 5748.

It is an arithmetic number, because the mean of its divisors is an integer number (1135008).

Almost surely, 2^11213715 is an apocalyptic number.

11213715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11213715 is a deficient number, since it is larger than the sum of its proper divisors (6946413).

11213715 is an equidigital number, since it uses as much as digits as its factorization.

11213715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098.

The product of its digits is 210, while the sum is 21.

The square root of 11213715 is about 3348.6885492682. The cubic root of 11213715 is about 223.8290774663.

Adding to 11213715 its reverse (51731211), we get a palindrome (62944926).

The spelling of 11213715 in words is "eleven million, two hundred thirteen thousand, seven hundred fifteen".