111397917 has 8 divisors (see below), whose sum is σ = 148582720. Its totient is φ = 74239200.

The previous prime is 111397883. The next prime is 111397933. The reversal of 111397917 is 719793111.

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

It is a de Polignac number, because none of the positive numbers 2^k-111397917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111392917) 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, 8184 + ... + 17022.

It is an arithmetic number, because the mean of its divisors is an integer number (18572840).

Almost surely, 2^111397917 is an apocalyptic number.

It is an amenable number.

111397917 is a deficient number, since it is larger than the sum of its proper divisors (37184803).

111397917 is an equidigital number, since it uses as much as digits as its factorization.

111397917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043.

The product of its digits is 11907, while the sum is 39.

The square root of 111397917 is about 10554.5211639373. The cubic root of 111397917 is about 481.1631470406.

The spelling of 111397917 in words is "one hundred eleven million, three hundred ninety-seven thousand, nine hundred seventeen".