11212308 has 18 divisors (see below), whose sum is σ = 28342314. Its totient is φ = 3737424.

The previous prime is 11212291. The next prime is 11212319. The reversal of 11212308 is 80321211.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 636804 = 3252^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155691 + ... + 155762.

It is an arithmetic number, because the mean of its divisors is an integer number (1574573).

Almost surely, 2^11212308 is an apocalyptic number.

11212308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11212308 is an abundant number, since it is smaller than the sum of its proper divisors (17130006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212308 is a wasteful number, since it uses less digits than its factorization.

11212308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311463 (or 311458 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 11212308 is about 3348.4784604354. The cubic root of 11212308 is about 223.8197156956.

Adding to 11212308 its reverse (80321211), we get a palindrome (91533519).

The spelling of 11212308 in words is "eleven million, two hundred twelve thousand, three hundred eight".