20103020213 has 4 divisors (see below), whose sum is σ = 20751504768. Its totient is φ = 19454535660.

The previous prime is 20103020191. The next prime is 20103020219. The reversal of 20103020213 is 31202030102.

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 a cyclic number.

It is not a de Polignac number, because 20103020213 - 2²⁴ = 20086242997 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 (20103020219) 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, 324242231 + ... + 324242292.

It is an arithmetic number, because the mean of its divisors is an integer number (5187876192).

Almost surely, 2^20103020213 is an apocalyptic number.

It is an amenable number.

20103020213 is a deficient number, since it is larger than the sum of its proper divisors (648484555).

20103020213 is an equidigital number, since it uses as much as digits as its factorization.

20103020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648484554.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20103020213 its reverse (31202030102), we get a palindrome (51305050315).

The spelling of 20103020213 in words is "twenty billion, one hundred three million, twenty thousand, two hundred thirteen".