20534103 has 6 divisors (see below), whose sum is σ = 29660384. Its totient is φ = 13689396.

The previous prime is 20534099. The next prime is 20534141. The reversal of 20534103 is 30143502.

It is not a de Polignac number, because 20534103 - 2² = 20534099 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 (20534303) 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, 1140775 + ... + 1140792.

Almost surely, 2^20534103 is an apocalyptic number.

20534103 is a deficient number, since it is larger than the sum of its proper divisors (9126281).

20534103 is a wasteful number, since it uses less digits than its factorization.

20534103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281573 (or 2281570 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20534103 is about 4531.4570504419. The cubic root of 20534103 is about 273.8368636585.

Adding to 20534103 its reverse (30143502), we get a palindrome (50677605).

The spelling of 20534103 in words is "twenty million, five hundred thirty-four thousand, one hundred three".