2003312444 has 24 divisors (see below), whose sum is σ = 4082224608. Its totient is φ = 842362560.

The previous prime is 2003312393. The next prime is 2003312449. The reversal of 2003312444 is 4442133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003312449) 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, 673487 + ... + 676454.

It is an arithmetic number, because the mean of its divisors is an integer number (170092692).

Almost surely, 2^2003312444 is an apocalyptic number.

It is an amenable number.

2003312444 is an abundant number, since it is smaller than the sum of its proper divisors (2078912164).

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

2003312444 is a wasteful number, since it uses less digits than its factorization.

2003312444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350005 (or 1350003 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2003312444 is about 44758.3784782246. The cubic root of 2003312444 is about 1260.6162358956.

Adding to 2003312444 its reverse (4442133002), we get a palindrome (6445445446).

The spelling of 2003312444 in words is "two billion, three million, three hundred twelve thousand, four hundred forty-four".