118236281 has 2 divisors, whose sum is σ = 118236282. Its totient is φ = 118236280.

The previous prime is 118236271. The next prime is 118236323. The reversal of 118236281 is 182632811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 839056 = 10835^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 118236281 - 2¹⁸ = 117974137 is a prime.

It is a super-2 number, since 2×118236281² = 27959636289421922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118236271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59118140 + 59118141.

It is an arithmetic number, because the mean of its divisors is an integer number (59118141).

Almost surely, 2^118236281 is an apocalyptic number.

It is an amenable number.

118236281 is a deficient number, since it is larger than the sum of its proper divisors (1).

118236281 is an equidigital number, since it uses as much as digits as its factorization.

118236281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 118236281 is about 10873.6507668768. The cubic root of 118236281 is about 490.8139754316.

The spelling of 118236281 in words is "one hundred eighteen million, two hundred thirty-six thousand, two hundred eighty-one".