440243304131 has 4 divisors (see below), whose sum is σ = 445189858200. Its totient is φ = 435296750064.

The previous prime is 440243304041. The next prime is 440243304143. The reversal of 440243304131 is 131403342044.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 440243304131 - 2¹⁴ = 440243287747 is a prime.

It is a super-2 number, since 2×440243304131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440243304094 and 440243304103.

It is not an unprimeable number, because it can be changed into a prime (440243334131) 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, 2473276901 + ... + 2473277078.

It is an arithmetic number, because the mean of its divisors is an integer number (111297464550).

Almost surely, 2^440243304131 is an apocalyptic number.

440243304131 is a deficient number, since it is larger than the sum of its proper divisors (4946554069).

440243304131 is an equidigital number, since it uses as much as digits as its factorization.

440243304131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946554068.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 440243304131 its reverse (131403342044), we get a palindrome (571646646175).

The spelling of 440243304131 in words is "four hundred forty billion, two hundred forty-three million, three hundred four thousand, one hundred thirty-one".