113217771 has 4 divisors (see below), whose sum is σ = 150957032. Its totient is φ = 75478512.

The previous prime is 113217761. The next prime is 113217779. The reversal of 113217771 is 177712311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113217771 - 2¹⁵ = 113185003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113217779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18869626 + ... + 18869631.

It is an arithmetic number, because the mean of its divisors is an integer number (37739258).

Almost surely, 2^113217771 is an apocalyptic number.

113217771 is a deficient number, since it is larger than the sum of its proper divisors (37739261).

113217771 is an equidigital number, since it uses as much as digits as its factorization.

113217771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37739260.

The product of its digits is 2058, while the sum is 30.

The square root of 113217771 is about 10640.3839686357. The cubic root of 113217771 is about 483.7691836499.

The spelling of 113217771 in words is "one hundred thirteen million, two hundred seventeen thousand, seven hundred seventy-one".