11031987 has 4 divisors (see below), whose sum is σ = 14709320. Its totient is φ = 7354656.

The previous prime is 11031983. The next prime is 11032039. The reversal of 11031987 is 78913011.

11031987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11031987 - 2² = 11031983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838662 + ... + 1838667.

It is an arithmetic number, because the mean of its divisors is an integer number (3677330).

Almost surely, 2^11031987 is an apocalyptic number.

11031987 is a deficient number, since it is larger than the sum of its proper divisors (3677333).

11031987 is an equidigital number, since it uses as much as digits as its factorization.

11031987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677332.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11031987 is about 3321.4435114871. The cubic root of 11031987 is about 222.6133715043.

Adding to 11031987 its reverse (78913011), we get a palindrome (89944998).

The spelling of 11031987 in words is "eleven million, thirty-one thousand, nine hundred eighty-seven".