440331312011 has 4 divisors (see below), whose sum is σ = 466233153912. Its totient is φ = 414429470112.

The previous prime is 440331312007. The next prime is 440331312041. The reversal of 440331312011 is 110213133044.

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 440331312011 - 2² = 440331312007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440331312041) 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, 12950920925 + ... + 12950920958.

It is an arithmetic number, because the mean of its divisors is an integer number (116558288478).

Almost surely, 2^440331312011 is an apocalyptic number.

440331312011 is a deficient number, since it is larger than the sum of its proper divisors (25901841901).

440331312011 is a wasteful number, since it uses less digits than its factorization.

440331312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25901841900.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 440331312011 its reverse (110213133044), we get a palindrome (550544445055).

The spelling of 440331312011 in words is "four hundred forty billion, three hundred thirty-one million, three hundred twelve thousand, eleven".