20103232113 has 6 divisors (see below), whose sum is σ = 29038001954. Its totient is φ = 13402154736.

The previous prime is 20103232111. The next prime is 20103232181. The reversal of 20103232113 is 31123230102.

It can be written as a sum of positive squares in only one way, i.e., 19742498064 + 360734049 = 140508^2 + 18993^2 .

It is not a de Polignac number, because 20103232113 - 2¹ = 20103232111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103232111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1116846220 + ... + 1116846237.

Almost surely, 2^20103232113 is an apocalyptic number.

It is an amenable number.

20103232113 is a deficient number, since it is larger than the sum of its proper divisors (8934769841).

20103232113 is a wasteful number, since it uses less digits than its factorization.

20103232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233692463 (or 2233692460 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20103232113 its reverse (31123230102), we get a palindrome (51226462215).

The spelling of 20103232113 in words is "twenty billion, one hundred three million, two hundred thirty-two thousand, one hundred thirteen".