11540131 has 2 divisors, whose sum is σ = 11540132. Its totient is φ = 11540130.

The previous prime is 11540129. The next prime is 11540141. The reversal of 11540131 is 13104511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11540131 - 2¹ = 11540129 is a prime.

It is a super-2 number, since 2×11540131² = 266349246994322, which contains 22 as substring.

Together with 11540129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11540101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5770065 + 5770066.

It is an arithmetic number, because the mean of its divisors is an integer number (5770066).

Almost surely, 2^11540131 is an apocalyptic number.

11540131 is the 2149-th centered pentagonal number.

11540131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11540131 is an equidigital number, since it uses as much as digits as its factorization.

11540131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11540131 is about 3397.0768316304. The cubic root of 11540131 is about 225.9801259053.

Adding to 11540131 its reverse (13104511), we get a palindrome (24644642).

The spelling of 11540131 in words is "eleven million, five hundred forty thousand, one hundred thirty-one".