20103061 has 24 divisors (see below), whose sum is σ = 24275160. Its totient is φ = 16558080.

The previous prime is 20103047. The next prime is 20103067. The reversal of 20103061 is 16030102.

It can be written as a sum of positive squares in 4 ways, for example, as 3538161 + 16564900 = 1881^2 + 4070^2 .

It is not a de Polignac number, because 20103061 - 2⁷ = 20102933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59485 + ... + 59821.

It is an arithmetic number, because the mean of its divisors is an integer number (1011465).

Almost surely, 2^20103061 is an apocalyptic number.

It is an amenable number.

20103061 is a deficient number, since it is larger than the sum of its proper divisors (4172099).

20103061 is a wasteful number, since it uses less digits than its factorization.

20103061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20103061 is about 4483.6437191195. The cubic root of 20103061 is about 271.9072140628.

Adding to 20103061 its reverse (16030102), we get a palindrome (36133163).

The spelling of 20103061 in words is "twenty million, one hundred three thousand, sixty-one".