20103316 has 24 divisors (see below), whose sum is σ = 37414440. Its totient is φ = 9418752.

The previous prime is 20103313. The next prime is 20103319. The reversal of 20103316 is 61330102.

It is an interprime number because it is at equal distance from previous prime (20103313) and next prime (20103319).

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 11424400 = 2946^2 + 3380^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20103316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103313) 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, 19420 + ... + 20428.

It is an arithmetic number, because the mean of its divisors is an integer number (1558935).

Almost surely, 2^20103316 is an apocalyptic number.

It is an amenable number.

20103316 is a deficient number, since it is larger than the sum of its proper divisors (17311124).

20103316 is a wasteful number, since it uses less digits than its factorization.

20103316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20103316 is about 4483.6721557224. The cubic root of 20103316 is about 271.9083637392.

Adding to 20103316 its reverse (61330102), we get a palindrome (81433418).

The spelling of 20103316 in words is "twenty million, one hundred three thousand, three hundred sixteen".