11213897 has 8 divisors (see below), whose sum is σ = 11903112. Its totient is φ = 10528000.

The previous prime is 11213843. The next prime is 11213957. The reversal of 11213897 is 79831211.

11213897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5812921 + 5400976 = 2411^2 + 2324^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11213897 - 2⁶ = 11213833 is a prime.

It is a super-3 number, since 3×11213897³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213827) 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 7 ways as a sum of consecutive naturals, for example, 11447 + ... + 12387.

It is an arithmetic number, because the mean of its divisors is an integer number (1487889).

Almost surely, 2^11213897 is an apocalyptic number.

11213897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11213897 is a deficient number, since it is larger than the sum of its proper divisors (689215).

11213897 is an equidigital number, since it uses as much as digits as its factorization.

11213897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its digits is 3024, while the sum is 32.

The square root of 11213897 is about 3348.7157239754. The cubic root of 11213897 is about 223.8302883844.

The spelling of 11213897 in words is "eleven million, two hundred thirteen thousand, eight hundred ninety-seven".