11311444441 has 8 divisors (see below), whose sum is σ = 12359700000. Its totient is φ = 10266512640.

The previous prime is 11311444427. The next prime is 11311444471. The reversal of 11311444441 is 14444411311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11311444441 - 2¹¹ = 11311442393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311444471) 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, 823816 + ... + 837433.

It is an arithmetic number, because the mean of its divisors is an integer number (1544962500).

Almost surely, 2^11311444441 is an apocalyptic number.

11311444441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11311444441 is a deficient number, since it is larger than the sum of its proper divisors (1048255559).

11311444441 is a wasteful number, since it uses less digits than its factorization.

11311444441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661879.

The product of its digits is 3072, while the sum is 28.

Adding to 11311444441 its reverse (14444411311), we get a palindrome (25755855752).

The spelling of 11311444441 in words is "eleven billion, three hundred eleven million, four hundred forty-four thousand, four hundred forty-one".