118231611 has 4 divisors (see below), whose sum is σ = 157642152. Its totient is φ = 78821072.

The previous prime is 118231601. The next prime is 118231643. The reversal of 118231611 is 116132811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116132811 = 3 ⋅38710937.

It is a cyclic number.

It is not a de Polignac number, because 118231611 - 2¹⁷ = 118100539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118231601) 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, 19705266 + ... + 19705271.

It is an arithmetic number, because the mean of its divisors is an integer number (39410538).

Almost surely, 2^118231611 is an apocalyptic number.

118231611 is a deficient number, since it is larger than the sum of its proper divisors (39410541).

118231611 is an equidigital number, since it uses as much as digits as its factorization.

118231611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39410540.

The product of its digits is 288, while the sum is 24.

The square root of 118231611 is about 10873.4360254705. The cubic root of 118231611 is about 490.8075134234.

The spelling of 118231611 in words is "one hundred eighteen million, two hundred thirty-one thousand, six hundred eleven".