213135003 has 16 divisors (see below), whose sum is σ = 318656800. Its totient is φ = 140784480.

The previous prime is 213134993. The next prime is 213135011. The reversal of 213135003 is 300531312.

It is not a de Polignac number, because 213135003 - 2¹⁰ = 213133979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213135053) 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, 33268 + ... + 39153.

It is an arithmetic number, because the mean of its divisors is an integer number (19916050).

Almost surely, 2^213135003 is an apocalyptic number.

213135003 is a deficient number, since it is larger than the sum of its proper divisors (105521797).

213135003 is a wasteful number, since it uses less digits than its factorization.

213135003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72539 (or 72533 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 213135003 is about 14599.1439132574. The cubic root of 213135003 is about 597.3354091096.

Adding to 213135003 its reverse (300531312), we get a palindrome (513666315).

The spelling of 213135003 in words is "two hundred thirteen million, one hundred thirty-five thousand, three".