2003431144 has 64 divisors (see below), whose sum is σ = 4420967040. Its totient is φ = 839112960.

The previous prime is 2003431109. The next prime is 2003431151. The reversal of 2003431144 is 4411343002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 848814 + ... + 851170.

It is an arithmetic number, because the mean of its divisors is an integer number (69077610).

Almost surely, 2^2003431144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2003431144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210483520).

2003431144 is an abundant number, since it is smaller than the sum of its proper divisors (2417535896).

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

2003431144 is a wasteful number, since it uses less digits than its factorization.

2003431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2003431144 is about 44759.7044672996. The cubic root of 2003431144 is about 1260.6411333585.

Adding to 2003431144 its reverse (4411343002), we get a palindrome (6414774146).

The spelling of 2003431144 in words is "two billion, three million, four hundred thirty-one thousand, one hundred forty-four".