240135513 has 16 divisors (see below), whose sum is σ = 330424896. Its totient is φ = 155010240.

The previous prime is 240135491. The next prime is 240135551. The reversal of 240135513 is 315531042.

It is not a de Polignac number, because 240135513 - 2⁶ = 240135449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240135913) 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 15 ways as a sum of consecutive naturals, for example, 18295 + ... + 28547.

It is an arithmetic number, because the mean of its divisors is an integer number (20651556).

Almost surely, 2^240135513 is an apocalyptic number.

It is an amenable number.

240135513 is a deficient number, since it is larger than the sum of its proper divisors (90289383).

240135513 is a wasteful number, since it uses less digits than its factorization.

240135513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10504.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 240135513 is about 15496.3064308886. The cubic root of 240135513 is about 621.5634431832.

Adding to 240135513 its reverse (315531042), we get a palindrome (555666555).

The spelling of 240135513 in words is "two hundred forty million, one hundred thirty-five thousand, five hundred thirteen".