118812287 has 16 divisors (see below), whose sum is σ = 134092800. Its totient is φ = 104339040.

The previous prime is 118812283. The next prime is 118812313. The reversal of 118812287 is 782218811.

It is a cyclic number.

It is not a de Polignac number, because 118812287 - 2² = 118812283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118812287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118812283) 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, 39389 + ... + 42297.

It is an arithmetic number, because the mean of its divisors is an integer number (8380800).

Almost surely, 2^118812287 is an apocalyptic number.

118812287 is a deficient number, since it is larger than the sum of its proper divisors (15280513).

118812287 is a wasteful number, since it uses less digits than its factorization.

118812287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046.

The product of its digits is 14336, while the sum is 38.

The square root of 118812287 is about 10900.1049077520. The cubic root of 118812287 is about 491.6097095883.

The spelling of 118812287 in words is "one hundred eighteen million, eight hundred twelve thousand, two hundred eighty-seven".