201130240 has 36 divisors (see below), whose sum is σ = 481772844. Its totient is φ = 80451584.

The previous prime is 201130229. The next prime is 201130243. The reversal of 201130240 is 42031102.

It can be written as a sum of positive squares in 2 ways, for example, as 40144896 + 160985344 = 6336^2 + 12688^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201130240.

It is not an unprimeable number, because it can be changed into a prime (201130243) 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 3 ways as a sum of consecutive naturals, for example, 77287 + ... + 79846.

It is an arithmetic number, because the mean of its divisors is an integer number (13382579).

Almost surely, 2^201130240 is an apocalyptic number.

201130240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201130240 is an abundant number, since it is smaller than the sum of its proper divisors (280642604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201130240 is an equidigital number, since it uses as much as digits as its factorization.

201130240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157154 (or 157140 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 201130240 is about 14182.0393455948. The cubic root of 201130240 is about 585.9030929224.

Adding to 201130240 its reverse (42031102), we get a palindrome (243161342).

The spelling of 201130240 in words is "two hundred one million, one hundred thirty thousand, two hundred forty".