20103404213 has 8 divisors (see below), whose sum is σ = 21861254232. Its totient is φ = 18409476096.

The previous prime is 20103404201. The next prime is 20103404263. The reversal of 20103404213 is 31240430102.

It can be written as a sum of positive squares in 4 ways, for example, as 8437892164 + 11665512049 = 91858^2 + 108007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20103404213 - 2⁴ = 20103404197 is a prime.

It is a super-2 number, since 2×20103404213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103404263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15979820 + ... + 15981077.

It is an arithmetic number, because the mean of its divisors is an integer number (2732656779).

Almost surely, 2^20103404213 is an apocalyptic number.

It is an amenable number.

20103404213 is a deficient number, since it is larger than the sum of its proper divisors (1757850019).

20103404213 is a wasteful number, since it uses less digits than its factorization.

20103404213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31960951.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20103404213 its reverse (31240430102), we get a palindrome (51343834315).

The spelling of 20103404213 in words is "twenty billion, one hundred three million, four hundred four thousand, two hundred thirteen".