118012231 has 4 divisors (see below), whose sum is σ = 118239264. Its totient is φ = 117785200.

The previous prime is 118012217. The next prime is 118012243. The reversal of 118012231 is 132210811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132210811 = 73 ⋅1811107.

It is a cyclic number.

It is not a de Polignac number, because 118012231 - 2⁵ = 118012199 is a prime.

It is a super-2 number, since 2×118012231² = 27853773331194722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118012199 and 118012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112735 + ... + 113776.

It is an arithmetic number, because the mean of its divisors is an integer number (29559816).

Almost surely, 2^118012231 is an apocalyptic number.

118012231 is a deficient number, since it is larger than the sum of its proper divisors (227033).

118012231 is an equidigital number, since it uses as much as digits as its factorization.

118012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227032.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 118012231 is about 10863.3434540200. The cubic root of 118012231 is about 490.5037593020.

The spelling of 118012231 in words is "one hundred eighteen million, twelve thousand, two hundred thirty-one".