11312003444 has 12 divisors (see below), whose sum is σ = 22624006944. Its totient is φ = 4848001464.

The previous prime is 11312003441. The next prime is 11312003449. The reversal of 11312003444 is 44430021311.

11312003444 is an admirable number.

It is a super-2 number, since 2×11312003444² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312003441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202000034 + ... + 202000089.

It is an arithmetic number, because the mean of its divisors is an integer number (1885333912).

Almost surely, 2^11312003444 is an apocalyptic number.

11312003444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11312003444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11312003444 is a wasteful number, since it uses less digits than its factorization.

11312003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404000134 (or 404000132 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11312003444 its reverse (44430021311), we get a palindrome (55742024755).

The spelling of 11312003444 in words is "eleven billion, three hundred twelve million, three thousand, four hundred forty-four".