11321140 has 12 divisors (see below), whose sum is σ = 23774436. Its totient is φ = 4528448.

The previous prime is 11321137. The next prime is 11321147. The reversal of 11321140 is 4112311.

It can be written as a sum of positive squares in 2 ways, for example, as 3232804 + 8088336 = 1798^2 + 2844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11321140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283009 + ... + 283048.

It is an arithmetic number, because the mean of its divisors is an integer number (1981203).

Almost surely, 2^11321140 is an apocalyptic number.

11321140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321140 is an abundant number, since it is smaller than the sum of its proper divisors (12453296).

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

11321140 is a wasteful number, since it uses less digits than its factorization.

11321140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566066 (or 566064 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11321140 is about 3364.6901789021. The cubic root of 11321140 is about 224.5415521224.

Adding to 11321140 its reverse (4112311), we get a palindrome (15433451).

The spelling of 11321140 in words is "eleven million, three hundred twenty-one thousand, one hundred forty".