11731087 has 2 divisors, whose sum is σ = 11731088. Its totient is φ = 11731086.

The previous prime is 11731079. The next prime is 11731091. The reversal of 11731087 is 78013711.

It is a strong prime.

It is an emirp because it is prime and its reverse (78013711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11731087 - 2³ = 11731079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11731007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5865543 + 5865544.

It is an arithmetic number, because the mean of its divisors is an integer number (5865544).

Almost surely, 2^11731087 is an apocalyptic number.

11731087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731087 is an equidigital number, since it uses as much as digits as its factorization.

11731087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 11731087 is about 3425.0674445914. The cubic root of 11731087 is about 227.2197539423.

Adding to 11731087 its reverse (78013711), we get a palindrome (89744798).

The spelling of 11731087 in words is "eleven million, seven hundred thirty-one thousand, eighty-seven".