240440312051 has 8 divisors (see below), whose sum is σ = 240816086784. Its totient is φ = 240064793280.

The previous prime is 240440312027. The next prime is 240440312129. The reversal of 240440312051 is 150213044042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240440312051 is a prime.

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 240440312051.

It is not an unprimeable number, because it can be changed into a prime (240440312851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1861166 + ... + 1986156.

It is an arithmetic number, because the mean of its divisors is an integer number (30102010848).

Almost surely, 2^240440312051 is an apocalyptic number.

240440312051 is a deficient number, since it is larger than the sum of its proper divisors (375774733).

240440312051 is a wasteful number, since it uses less digits than its factorization.

240440312051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127981.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 240440312051 its reverse (150213044042), we get a palindrome (390653356093).

The spelling of 240440312051 in words is "two hundred forty billion, four hundred forty million, three hundred twelve thousand, fifty-one".