240712813 has 4 divisors (see below), whose sum is σ = 262595808. Its totient is φ = 218829820.

The previous prime is 240712793. The next prime is 240712817. The reversal of 240712813 is 318217042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 240712813 - 2¹³ = 240704621 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 (240712817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10941481 + ... + 10941502.

It is an arithmetic number, because the mean of its divisors is an integer number (65648952).

Almost surely, 2^240712813 is an apocalyptic number.

It is an amenable number.

240712813 is a deficient number, since it is larger than the sum of its proper divisors (21882995).

240712813 is a wasteful number, since it uses less digits than its factorization.

240712813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21882994.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 240712813 is about 15514.9222685774. The cubic root of 240712813 is about 622.0611363486.

Adding to 240712813 its reverse (318217042), we get a palindrome (558929855).

The spelling of 240712813 in words is "two hundred forty million, seven hundred twelve thousand, eight hundred thirteen".