2003213400 has 48 divisors (see below), whose sum is σ = 6209963400. Its totient is φ = 534190080.

The previous prime is 2003213393. The next prime is 2003213413. The reversal of 2003213400 is 43123002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2003213400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1668745 + ... + 1669944.

Almost surely, 2^2003213400 is an apocalyptic number.

2003213400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003213400 is an abundant number, since it is smaller than the sum of its proper divisors (4206750000).

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

2003213400 is a wasteful number, since it uses less digits than its factorization.

2003213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338708 (or 3338699 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2003213400 is about 44757.2720348325. The cubic root of 2003213400 is about 1260.5954605488.

Adding to 2003213400 its reverse (43123002), we get a palindrome (2046336402).

The spelling of 2003213400 in words is "two billion, three million, two hundred thirteen thousand, four hundred".