11312205 has 16 divisors (see below), whose sum is σ = 18887040. Its totient is φ = 5770688.

The previous prime is 11312183. The next prime is 11312207. The reversal of 11312205 is 50221311.

11312205 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11312205 - 2¹¹ = 11310157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16050 + ... + 16739.

It is an arithmetic number, because the mean of its divisors is an integer number (1180440).

Almost surely, 2^11312205 is an apocalyptic number.

11312205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11312205 is a deficient number, since it is larger than the sum of its proper divisors (7574835).

11312205 is a wasteful number, since it uses less digits than its factorization.

11312205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32820.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11312205 is about 3363.3621571279. The cubic root of 11312205 is about 224.4824648219.

Adding to 11312205 its reverse (50221311), we get a palindrome (61533516).

The spelling of 11312205 in words is "eleven million, three hundred twelve thousand, two hundred five".