240640113 has 16 divisors (see below), whose sum is σ = 367072256. Its totient is φ = 137365200.

The previous prime is 240640109. The next prime is 240640123. The reversal of 240640113 is 311046042.

It is not a de Polignac number, because 240640113 - 2² = 240640109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 240640113.

It is not an unprimeable number, because it can be changed into a prime (240640123) 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, 16620 + ... + 27522.

It is an arithmetic number, because the mean of its divisors is an integer number (22942016).

Almost surely, 2^240640113 is an apocalyptic number.

It is an amenable number.

240640113 is a deficient number, since it is larger than the sum of its proper divisors (126432143).

240640113 is a wasteful number, since it uses less digits than its factorization.

240640113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 240640113 is about 15512.5791859381. The cubic root of 240640113 is about 621.9985051470.

Adding to 240640113 its reverse (311046042), we get a palindrome (551686155).

The spelling of 240640113 in words is "two hundred forty million, six hundred forty thousand, one hundred thirteen".