111271663 has 4 divisors (see below), whose sum is σ = 113985648. Its totient is φ = 108557680.

The previous prime is 111271649. The next prime is 111271687. The reversal of 111271663 is 366172111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366172111 = 227 ⋅1613093.

It is a cyclic number.

It is not a de Polignac number, because 111271663 - 2¹⁷ = 111140591 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 (111271603) 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, 1356931 + ... + 1357012.

It is an arithmetic number, because the mean of its divisors is an integer number (28496412).

Almost surely, 2^111271663 is an apocalyptic number.

111271663 is a deficient number, since it is larger than the sum of its proper divisors (2713985).

111271663 is an equidigital number, since it uses as much as digits as its factorization.

111271663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713984.

The product of its digits is 1512, while the sum is 28.

The square root of 111271663 is about 10548.5384295645. The cubic root of 111271663 is about 480.9813012211.

The spelling of 111271663 in words is "one hundred eleven million, two hundred seventy-one thousand, six hundred sixty-three".