20103116 has 24 divisors (see below), whose sum is σ = 38627904. Its totient is φ = 9078480.

The previous prime is 20103113. The next prime is 20103137. The reversal of 20103116 is 61130102.

It is a self number, because there is not a number n which added to its sum of digits gives 20103116.

It is not an unprimeable number, because it can be changed into a prime (20103113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5771 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (1609496).

Almost surely, 2^20103116 is an apocalyptic number.

It is an amenable number.

20103116 is a deficient number, since it is larger than the sum of its proper divisors (18524788).

20103116 is a wasteful number, since it uses less digits than its factorization.

20103116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20103116 is about 4483.6498525197. The cubic root of 20103116 is about 271.9074620331.

Adding to 20103116 its reverse (61130102), we get a palindrome (81233218).

The spelling of 20103116 in words is "twenty million, one hundred three thousand, one hundred sixteen".