11317998 has 16 divisors (see below), whose sum is σ = 22681296. Its totient is φ = 3765120.

The previous prime is 11317997. The next prime is 11318017. The reversal of 11317998 is 89971311.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11317997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (1417581).

Almost surely, 2^11317998 is an apocalyptic number.

11317998 is an abundant number, since it is smaller than the sum of its proper divisors (11363298).

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

11317998 is a wasteful number, since it uses less digits than its factorization.

11317998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its digits is 13608, while the sum is 39.

The square root of 11317998 is about 3364.2232387284. The cubic root of 11317998 is about 224.5207775705.

The spelling of 11317998 in words is "eleven million, three hundred seventeen thousand, nine hundred ninety-eight".