118531033 has 4 divisors (see below), whose sum is σ = 122618340. Its totient is φ = 114443728.

The previous prime is 118531031. The next prime is 118531037. The reversal of 118531033 is 330135811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72114064 + 46416969 = 8492^2 + 6813^2 .

It is a cyclic number.

It is not a de Polignac number, because 118531033 - 2¹ = 118531031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118530989 and 118531007.

It is not an unprimeable number, because it can be changed into a prime (118531031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043610 + ... + 2043667.

It is an arithmetic number, because the mean of its divisors is an integer number (30654585).

Almost surely, 2^118531033 is an apocalyptic number.

It is an amenable number.

118531033 is a deficient number, since it is larger than the sum of its proper divisors (4087307).

118531033 is an equidigital number, since it uses as much as digits as its factorization.

118531033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087306.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 118531033 is about 10887.1958281276. The cubic root of 118531033 is about 491.2214881142.

Adding to 118531033 its reverse (330135811), we get a palindrome (448666844).

The spelling of 118531033 in words is "one hundred eighteen million, five hundred thirty-one thousand, thirty-three".