11317988 has 24 divisors (see below), whose sum is σ = 22879584. Its totient is φ = 4841600.

The previous prime is 11317961. The next prime is 11317997. The reversal of 11317988 is 88971311.

11317988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6818 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (953316).

Almost surely, 2^11317988 is an apocalyptic number.

It is an amenable number.

11317988 is an abundant number, since it is smaller than the sum of its proper divisors (11561596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11317988 is a wasteful number, since it uses less digits than its factorization.

11317988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163 (or 15161 counting only the distinct ones).

The product of its digits is 12096, while the sum is 38.

The square root of 11317988 is about 3364.2217525009. The cubic root of 11317988 is about 224.5207114454.

It can be divided in two parts, 1131 and 7988, that added together give a palindrome (9119).

The spelling of 11317988 in words is "eleven million, three hundred seventeen thousand, nine hundred eighty-eight".