11311230 has 64 divisors (see below), whose sum is σ = 31569408. Its totient is φ = 2540160.

The previous prime is 11311219. The next prime is 11311231. The reversal of 11311230 is 3211311.

It is a super-2 number, since 2×11311230² = 255887848225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311231) 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 31 ways as a sum of consecutive naturals, for example, 12369 + ... + 13251.

It is an arithmetic number, because the mean of its divisors is an integer number (493272).

Almost surely, 2^11311230 is an apocalyptic number.

11311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11311230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15784704).

11311230 is an abundant number, since it is smaller than the sum of its proper divisors (20258178).

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

11311230 is a wasteful number, since it uses less digits than its factorization.

11311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11311230 is about 3363.2172097562. The cubic root of 11311230 is about 224.4760152484.

Adding to 11311230 its reverse (3211311), we get a palindrome (14522541).

The spelling of 11311230 in words is "eleven million, three hundred eleven thousand, two hundred thirty".