2003213131 has 4 divisors (see below), whose sum is σ = 2006329192. Its totient is φ = 2000097072.

The previous prime is 2003213123. The next prime is 2003213143. The reversal of 2003213131 is 1313123002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2003213131 - 2³ = 2003213123 is a prime.

It is a super-2 number, since 2×2003213131² = 8025725696421646322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003213161) 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, 1557066 + ... + 1558351.

It is an arithmetic number, because the mean of its divisors is an integer number (501582298).

Almost surely, 2^2003213131 is an apocalyptic number.

2003213131 is a deficient number, since it is larger than the sum of its proper divisors (3116061).

2003213131 is an equidigital number, since it uses as much as digits as its factorization.

2003213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116060.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2003213131 is about 44757.2690297342. The cubic root of 2003213131 is about 1260.5954041228.

Adding to 2003213131 its reverse (1313123002), we get a palindrome (3316336133).

The spelling of 2003213131 in words is "two billion, three million, two hundred thirteen thousand, one hundred thirty-one".