20302103213 has 12 divisors (see below), whose sum is σ = 23660417052. Its totient is φ = 17369614080.

The previous prime is 20302103207. The next prime is 20302103249. The reversal of 20302103213 is 31230120302.

It can be written as a sum of positive squares in 2 ways, for example, as 5078985289 + 15223117924 = 71267^2 + 123382^2 .

It is not a de Polignac number, because 20302103213 - 2¹⁰ = 20302102189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302103191 and 20302103200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302103713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356420 + ... + 409437.

It is an arithmetic number, because the mean of its divisors is an integer number (1971701421).

Almost surely, 2^20302103213 is an apocalyptic number.

It is an amenable number.

20302103213 is a deficient number, since it is larger than the sum of its proper divisors (3358313839).

20302103213 is an equidigital number, since it uses as much as digits as its factorization.

20302103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766412 (or 766405 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20302103213 its reverse (31230120302), we get a palindrome (51532223515).

The spelling of 20302103213 in words is "twenty billion, three hundred two million, one hundred three thousand, two hundred thirteen".