11540331 has 24 divisors (see below), whose sum is σ = 19257264. Its totient is φ = 6581760.

The previous prime is 11540327. The next prime is 11540357. The reversal of 11540331 is 13304511.

11540331 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11540331 - 2² = 11540327 is a prime.

It is a super-2 number, since 2×11540331² = 266358479179122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11540371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1746 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (802386).

Almost surely, 2^11540331 is an apocalyptic number.

11540331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11540331 is a deficient number, since it is larger than the sum of its proper divisors (7716933).

11540331 is a wasteful number, since it uses less digits than its factorization.

11540331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6888 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 11540331 is about 3397.1062685762. The cubic root of 11540331 is about 225.9814313718.

Adding to 11540331 its reverse (13304511), we get a palindrome (24844842).

The spelling of 11540331 in words is "eleven million, five hundred forty thousand, three hundred thirty-one".