2003021313 has 16 divisors (see below), whose sum is σ = 2741646336. Its totient is φ = 1300073040.

The previous prime is 2003021303. The next prime is 2003021323. The reversal of 2003021313 is 3131203002.

2003021313 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2003021303) and next prime (2003021323).

It is not a de Polignac number, because 2003021313 - 2⁴ = 2003021297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003021292 and 2003021301.

It is not an unprimeable number, because it can be changed into a prime (2003021303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15156 + ... + 65082.

It is an arithmetic number, because the mean of its divisors is an integer number (171352896).

Almost surely, 2^2003021313 is an apocalyptic number.

It is an amenable number.

2003021313 is a deficient number, since it is larger than the sum of its proper divisors (738625023).

2003021313 is a wasteful number, since it uses less digits than its factorization.

2003021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50284.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2003021313 is about 44755.1261086370. The cubic root of 2003021313 is about 1260.5551666656. Note that the first 3 decimals are identical.

Adding to 2003021313 its reverse (3131203002), we get a palindrome (5134224315).

The spelling of 2003021313 in words is "two billion, three million, twenty-one thousand, three hundred thirteen".