2003120517 has 4 divisors (see below), whose sum is σ = 2670827360. Its totient is φ = 1335413676.

The previous prime is 2003120503. The next prime is 2003120527. The reversal of 2003120517 is 7150213002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2003120517 - 2⁸ = 2003120261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2003120493 and 2003120502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003120527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333853417 + ... + 333853422.

It is an arithmetic number, because the mean of its divisors is an integer number (667706840).

Almost surely, 2^2003120517 is an apocalyptic number.

It is an amenable number.

2003120517 is a deficient number, since it is larger than the sum of its proper divisors (667706843).

2003120517 is an equidigital number, since it uses as much as digits as its factorization.

2003120517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667706842.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2003120517 is about 44756.2343925402. The cubic root of 2003120517 is about 1260.5759769035.

Adding to 2003120517 its reverse (7150213002), we get a palindrome (9153333519).

The spelling of 2003120517 in words is "two billion, three million, one hundred twenty thousand, five hundred seventeen".