11240311 has 4 divisors (see below), whose sum is σ = 11254824. Its totient is φ = 11225800.

The previous prime is 11240309. The next prime is 11240323. The reversal of 11240311 is 11304211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11304211 = 53 ⋅213287.

It is a cyclic number.

It is not a de Polignac number, because 11240311 - 2¹ = 11240309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11240291 and 11240300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243311) 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, 6025 + ... + 7666.

It is an arithmetic number, because the mean of its divisors is an integer number (2813706).

Almost surely, 2^11240311 is an apocalyptic number.

11240311 is a deficient number, since it is larger than the sum of its proper divisors (14513).

11240311 is an equidigital number, since it uses as much as digits as its factorization.

11240311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14512.

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

The square root of 11240311 is about 3352.6573042886. The cubic root of 11240311 is about 224.0058924364.

Adding to 11240311 its reverse (11304211), we get a palindrome (22544522).

The spelling of 11240311 in words is "eleven million, two hundred forty thousand, three hundred eleven".