20103102 has 48 divisors (see below), whose sum is σ = 46949760. Its totient is φ = 6196176.

The previous prime is 20103101. The next prime is 20103103. The reversal of 20103102 is 20130102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20103101) and next prime (20103103).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103101) 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 23 ways as a sum of consecutive naturals, for example, 14023 + ... + 15389.

It is an arithmetic number, because the mean of its divisors is an integer number (978120).

Almost surely, 2^20103102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20103102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23474880).

20103102 is an abundant number, since it is smaller than the sum of its proper divisors (26846658).

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

20103102 is a wasteful number, since it uses less digits than its factorization.

20103102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20103102 is about 4483.6482912914. The cubic root of 20103102 is about 271.9073989134.

Adding to 20103102 its reverse (20130102), we get a palindrome (40233204).

Subtracting 20103102 from its reverse (20130102), we obtain a cube (27000 = 30³).

The spelling of 20103102 in words is "twenty million, one hundred three thousand, one hundred two".