20103102030 has 64 divisors (see below), whose sum is σ = 52711907328. Its totient is φ = 4866226560.

The previous prime is 20103102023. The next prime is 20103102077. The reversal of 20103102030 is 3020130102.

It is a happy number.

It is a super-2 number, since 2×20103102030² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20103101997 and 20103102015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178419 + ... + 268401.

It is an arithmetic number, because the mean of its divisors is an integer number (823623552).

Almost surely, 2^20103102030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20103102030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26355953664).

20103102030 is an abundant number, since it is smaller than the sum of its proper divisors (32608805298).

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

20103102030 is a wasteful number, since it uses less digits than its factorization.

20103102030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90681.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20103102030 its reverse (3020130102), we get a palindrome (23123232132).

The spelling of 20103102030 in words is "twenty billion, one hundred three million, one hundred two thousand, thirty".