440203242313 has 4 divisors (see below), whose sum is σ = 440218993540. Its totient is φ = 440187491088.

The previous prime is 440203242301. The next prime is 440203242317. The reversal of 440203242313 is 313242302044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 213714817849 + 226488424464 = 462293^2 + 475908^2 .

It is a cyclic number.

It is not a de Polignac number, because 440203242313 - 2²¹ = 440201145161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440203242317) 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, 7833618 + ... + 7889611.

It is an arithmetic number, because the mean of its divisors is an integer number (110054748385).

Almost surely, 2^440203242313 is an apocalyptic number.

It is an amenable number.

440203242313 is a deficient number, since it is larger than the sum of its proper divisors (15751227).

440203242313 is a wasteful number, since it uses less digits than its factorization.

440203242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751226.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 440203242313 its reverse (313242302044), we get a palindrome (753445544357).

The spelling of 440203242313 in words is "four hundred forty billion, two hundred three million, two hundred forty-two thousand, three hundred thirteen".