118311081 has 16 divisors (see below), whose sum is σ = 189772800. Its totient is φ = 64047888.

The previous prime is 118311031. The next prime is 118311091. The reversal of 118311081 is 180113811.

It is not a de Polignac number, because 118311081 - 2¹³ = 118302889 is a prime.

It is a super-3 number, since 3×118311081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (118311031) 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, 147861 + ... + 148658.

It is an arithmetic number, because the mean of its divisors is an integer number (11860800).

Almost surely, 2^118311081 is an apocalyptic number.

It is an amenable number.

118311081 is a deficient number, since it is larger than the sum of its proper divisors (71461719).

118311081 is a wasteful number, since it uses less digits than its factorization.

118311081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296548.

The product of its (nonzero) digits is 192, while the sum is 24.

The square root of 118311081 is about 10877.0897302541. The cubic root of 118311081 is about 490.9174550795.

Adding to 118311081 its reverse (180113811), we get a palindrome (298424892).

The spelling of 118311081 in words is "one hundred eighteen million, three hundred eleven thousand, eighty-one".