11731587 has 32 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 6324384.

The previous prime is 11731549. The next prime is 11731589. The reversal of 11731587 is 78513711.

It is not a de Polignac number, because 11731587 - 2¹⁴ = 11715203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11731589) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51568 + ... + 51794.

It is an arithmetic number, because the mean of its divisors is an integer number (590976).

Almost surely, 2^11731587 is an apocalyptic number.

11731587 is a deficient number, since it is larger than the sum of its proper divisors (7179645).

11731587 is a wasteful number, since it uses less digits than its factorization.

11731587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its digits is 5880, while the sum is 33.

The square root of 11731587 is about 3425.1404350771. The cubic root of 11731587 is about 227.2229820678. Note that the first 3 decimals are identical.

The spelling of 11731587 in words is "eleven million, seven hundred thirty-one thousand, five hundred eighty-seven".