240240013 has 4 divisors (see below), whose sum is σ = 258720028. Its totient is φ = 221760000.

The previous prime is 240239969. The next prime is 240240019. The reversal of 240240013 is 310042042.

240240013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310042042 = 2 ⋅155021021.

It can be written as a sum of positive squares in 2 ways, for example, as 49744809 + 190495204 = 7053^2 + 13802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240240013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240240019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9239988 + ... + 9240013.

It is an arithmetic number, because the mean of its divisors is an integer number (64680007).

Almost surely, 2^240240013 is an apocalyptic number.

It is an amenable number.

240240013 is a deficient number, since it is larger than the sum of its proper divisors (18480015).

240240013 is a wasteful number, since it uses less digits than its factorization.

240240013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18480014.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 240240013 is about 15499.6778353616. The cubic root of 240240013 is about 621.6535922263.

Adding to 240240013 its reverse (310042042), we get a palindrome (550282055).

The spelling of 240240013 in words is "two hundred forty million, two hundred forty thousand, thirteen".