20100903 has 8 divisors (see below), whose sum is σ = 27240816. Its totient is φ = 13180800.

The previous prime is 20100893. The next prime is 20100907. The reversal of 20100903 is 30900102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20100903 - 2⁹ = 20100391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54738 + ... + 55103.

It is an arithmetic number, because the mean of its divisors is an integer number (3405102).

Almost surely, 2^20100903 is an apocalyptic number.

20100903 is a deficient number, since it is larger than the sum of its proper divisors (7139913).

20100903 is a wasteful number, since it uses less digits than its factorization.

20100903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109905.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 20100903 is about 4483.4030601765. The cubic root of 20100903 is about 271.8974842549.

The spelling of 20100903 in words is "twenty million, one hundred thousand, nine hundred three".