11213031444 has 12 divisors (see below), whose sum is σ = 26163740064. Its totient is φ = 3737677144.

The previous prime is 11213031409. The next prime is 11213031457. The reversal of 11213031444 is 44413031211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467209632 + ... + 467209655.

It is an arithmetic number, because the mean of its divisors is an integer number (2180311672).

Almost surely, 2^11213031444 is an apocalyptic number.

It is an amenable number.

11213031444 is an abundant number, since it is smaller than the sum of its proper divisors (14950708620).

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

11213031444 is a wasteful number, since it uses less digits than its factorization.

11213031444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934419294 (or 934419292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11213031444 its reverse (44413031211), we get a palindrome (55626062655).

The spelling of 11213031444 in words is "eleven billion, two hundred thirteen million, thirty-one thousand, four hundred forty-four".