118003281 has 48 divisors (see below), whose sum is σ = 186896640. Its totient is φ = 65482560.

The previous prime is 118003279. The next prime is 118003283. The reversal of 118003281 is 182300811.

It is an interprime number because it is at equal distance from previous prime (118003279) and next prime (118003283).

It is not a de Polignac number, because 118003281 - 2¹ = 118003279 is a prime.

It is a super-2 number, since 2×118003281² = 27849548653529922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118003283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1761210 + ... + 1761276.

It is an arithmetic number, because the mean of its divisors is an integer number (3893680).

Almost surely, 2^118003281 is an apocalyptic number.

118003281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118003281 is a deficient number, since it is larger than the sum of its proper divisors (68893359).

118003281 is a wasteful number, since it uses less digits than its factorization.

118003281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 118003281 is about 10862.9315104165. The cubic root of 118003281 is about 490.4913591194.

The spelling of 118003281 in words is "one hundred eighteen million, three thousand, two hundred eighty-one".