111312047 has 16 divisors (see below), whose sum is σ = 140458752. Its totient is φ = 85686720.

The previous prime is 111312029. The next prime is 111312053. The reversal of 111312047 is 740213111.

It is a happy number.

It is not a de Polignac number, because 111312047 - 2¹⁶ = 111246511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2318 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (8778672).

Almost surely, 2^111312047 is an apocalyptic number.

111312047 is a deficient number, since it is larger than the sum of its proper divisors (29146705).

111312047 is a wasteful number, since it uses less digits than its factorization.

111312047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17518.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 111312047 is about 10550.4524547528. The cubic root of 111312047 is about 481.0394819504.

Adding to 111312047 its reverse (740213111), we get a palindrome (851525158).

The spelling of 111312047 in words is "one hundred eleven million, three hundred twelve thousand, forty-seven".