11231240 has 32 divisors (see below), whose sum is σ = 25704000. Its totient is φ = 4415424.

The previous prime is 11231219. The next prime is 11231243. The reversal of 11231240 is 4213211.

It is a super-2 number, since 2×11231240² = 252281503875200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20 + ... + 4739.

It is an arithmetic number, because the mean of its divisors is an integer number (803250).

Almost surely, 2^11231240 is an apocalyptic number.

11231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12852000).

11231240 is an abundant number, since it is smaller than the sum of its proper divisors (14472760).

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

11231240 is a wasteful number, since it uses less digits than its factorization.

11231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4825 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11231240 is about 3351.3042237314. The cubic root of 11231240 is about 223.9456181760.

Adding to 11231240 its reverse (4213211), we get a palindrome (15444451).

It can be divided in two parts, 11 and 231240, that multiplied together give a triangular number (2543640 = T₂₂₅₅).

The spelling of 11231240 in words is "eleven million, two hundred thirty-one thousand, two hundred forty".