20130213 has 4 divisors (see below), whose sum is σ = 26840288. Its totient is φ = 13420140.

The previous prime is 20130203. The next prime is 20130223. The reversal of 20130213 is 31203102.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (20130203) and next prime (20130223).

It is not a de Polignac number, because 20130213 - 2⁴ = 20130197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130203) 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, 3355033 + ... + 3355038.

It is an arithmetic number, because the mean of its divisors is an integer number (6710072).

Almost surely, 2^20130213 is an apocalyptic number.

It is an amenable number.

20130213 is a deficient number, since it is larger than the sum of its proper divisors (6710075).

20130213 is an equidigital number, since it uses as much as digits as its factorization.

20130213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710074.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20130213 is about 4486.6705918754. The cubic root of 20130213 is about 272.0295752515.

Adding to 20130213 its reverse (31203102), we get a palindrome (51333315).

The spelling of 20130213 in words is "twenty million, one hundred thirty thousand, two hundred thirteen".