2003213403 has 16 divisors (see below), whose sum is σ = 2979018240. Its totient is φ = 1330393032.

The previous prime is 2003213393. The next prime is 2003213413. The reversal of 2003213403 is 3043123002.

2003213403 is a `hidden beast` number, since 2 + 0 + 0 + 321 + 340 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (2003213393) and next prime (2003213413).

It is not a de Polignac number, because 2003213403 - 2¹⁸ = 2002951259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2003213413) 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 15 ways as a sum of consecutive naturals, for example, 133951 + ... + 148152.

It is an arithmetic number, because the mean of its divisors is an integer number (186188640).

Almost surely, 2^2003213403 is an apocalyptic number.

2003213403 is a deficient number, since it is larger than the sum of its proper divisors (975804837).

2003213403 is a wasteful number, since it uses less digits than its factorization.

2003213403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282375 (or 282369 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 2003213403 is about 44757.2720683466. The cubic root of 2003213403 is about 1260.5954611781.

Adding to 2003213403 its reverse (3043123002), we get a palindrome (5046336405).

The spelling of 2003213403 in words is "two billion, three million, two hundred thirteen thousand, four hundred three".