111372113 has 4 divisors (see below), whose sum is σ = 114088548. Its totient is φ = 108655680.

The previous prime is 111372073. The next prime is 111372137. The reversal of 111372113 is 311273111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311273111 = 17 ⋅18310183.

It can be written as a sum of positive squares in 2 ways, for example, as 34774609 + 76597504 = 5897^2 + 8752^2 .

It is a cyclic number.

It is not a de Polignac number, because 111372113 - 2⁸ = 111371857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111372713) 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, 1358156 + ... + 1358237.

It is an arithmetic number, because the mean of its divisors is an integer number (28522137).

Almost surely, 2^111372113 is an apocalyptic number.

It is an amenable number.

111372113 is a deficient number, since it is larger than the sum of its proper divisors (2716435).

111372113 is an equidigital number, since it uses as much as digits as its factorization.

111372113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716434.

The product of its digits is 126, while the sum is 20.

The square root of 111372113 is about 10553.2986786123. The cubic root of 111372113 is about 481.1259922686.

The spelling of 111372113 in words is "one hundred eleven million, three hundred seventy-two thousand, one hundred thirteen".