20103112 has 32 divisors (see below), whose sum is σ = 40678200. Its totient is φ = 9278464.

The previous prime is 20103107. The next prime is 20103113. The reversal of 20103112 is 21130102.

It can be written as a sum of positive squares in 4 ways, for example, as 20016676 + 86436 = 4474^2 + 294^2 .

It is a super-2 number, since 2×20103112² = 808270224169088, which contains 22 as substring.

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, 5814 + ... + 8602.

Almost surely, 2^20103112 is an apocalyptic number.

It is an amenable number.

20103112 is an abundant number, since it is smaller than the sum of its proper divisors (20575088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20103112 is a wasteful number, since it uses less digits than its factorization.

20103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2861 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20103112 is about 4483.6494064545. The cubic root of 20103112 is about 271.9074439989.

Adding to 20103112 its reverse (21130102), we get a palindrome (41233214).

The spelling of 20103112 in words is "twenty million, one hundred three thousand, one hundred twelve".