11311087 has 2 divisors, whose sum is σ = 11311088. Its totient is φ = 11311086.

The previous prime is 11311051. The next prime is 11311109. The reversal of 11311087 is 78011311.

It is an a-pointer prime, because the next prime (11311109) can be obtained adding 11311087 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655543 + 5655544.

It is an arithmetic number, because the mean of its divisors is an integer number (5655544).

Almost surely, 2^11311087 is an apocalyptic number.

11311087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311087 is an equidigital number, since it uses as much as digits as its factorization.

11311087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 11311087 is about 3363.1959502830. The cubic root of 11311087 is about 224.4750692798.

Adding to 11311087 its reverse (78011311), we get a palindrome (89322398).

The spelling of 11311087 in words is "eleven million, three hundred eleven thousand, eighty-seven".