20103440313 has 16 divisors (see below), whose sum is σ = 29451744000. Its totient is φ = 12096246480.

The previous prime is 20103440299. The next prime is 20103440323. The reversal of 20103440313 is 31304430102.

It is not a de Polignac number, because 20103440313 - 2¹⁶ = 20103374777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20103440313.

It is not an unprimeable number, because it can be changed into a prime (20103440323) 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 15 ways as a sum of consecutive naturals, for example, 2186763 + ... + 2195936.

It is an arithmetic number, because the mean of its divisors is an integer number (1840734000).

Almost surely, 2^20103440313 is an apocalyptic number.

It is an amenable number.

20103440313 is a deficient number, since it is larger than the sum of its proper divisors (9348303687).

20103440313 is a wasteful number, since it uses less digits than its factorization.

20103440313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382852.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20103440313 its reverse (31304430102), we get a palindrome (51407870415).

The spelling of 20103440313 in words is "twenty billion, one hundred three million, four hundred forty thousand, three hundred thirteen".