111881671 has 8 divisors (see below), whose sum is σ = 128476800. Its totient is φ = 96357240.

The previous prime is 111881669. The next prime is 111881677. The reversal of 111881671 is 176188111.

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

It is a cyclic number.

It is not a de Polignac number, because 111881671 - 2¹ = 111881669 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 (111881677) 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, 267451 + ... + 267868.

It is an arithmetic number, because the mean of its divisors is an integer number (16059600).

Almost surely, 2^111881671 is an apocalyptic number.

111881671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111881671 is a deficient number, since it is larger than the sum of its proper divisors (16595129).

111881671 is a wasteful number, since it uses less digits than its factorization.

111881671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535349.

The product of its digits is 2688, while the sum is 34.

The square root of 111881671 is about 10577.4132471035. The cubic root of 111881671 is about 481.8586372290.

The spelling of 111881671 in words is "one hundred eleven million, eight hundred eighty-one thousand, six hundred seventy-one".