11311917 has 8 divisors (see below), whose sum is σ = 15148224. Its totient is φ = 7508448.

The previous prime is 11311907. The next prime is 11311939. The reversal of 11311917 is 71911311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11311917 - 2⁷ = 11311789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7393 + ... + 8790.

It is an arithmetic number, because the mean of its divisors is an integer number (1893528).

Almost surely, 2^11311917 is an apocalyptic number.

It is an amenable number.

11311917 is a deficient number, since it is larger than the sum of its proper divisors (3836307).

11311917 is a wasteful number, since it uses less digits than its factorization.

11311917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16419.

The product of its digits is 189, while the sum is 24.

The square root of 11311917 is about 3363.3193425543. The cubic root of 11311917 is about 224.4805597557.

The spelling of 11311917 in words is "eleven million, three hundred eleven thousand, nine hundred seventeen".