11231304444 has 18 divisors (see below), whose sum is σ = 28390241880. Its totient is φ = 3743768136.

The previous prime is 11231304437. The next prime is 11231304449. The reversal of 11231304444 is 44440313211.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×11231304444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231304449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155990304 + ... + 155990375.

It is an arithmetic number, because the mean of its divisors is an integer number (1577235660).

Almost surely, 2^11231304444 is an apocalyptic number.

It is an amenable number.

11231304444 is an abundant number, since it is smaller than the sum of its proper divisors (17158937436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231304444 is a wasteful number, since it uses less digits than its factorization.

11231304444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311980689 (or 311980684 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 11231304444 its reverse (44440313211), we get a palindrome (55671617655).

The spelling of 11231304444 in words is "eleven billion, two hundred thirty-one million, three hundred four thousand, four hundred forty-four".