20103603 has 8 divisors (see below), whose sum is σ = 28866768. Its totient is φ = 12371424.

The previous prime is 20103599. The next prime is 20103607. The reversal of 20103603 is 30630102.

It is an interprime number because it is at equal distance from previous prime (20103599) and next prime (20103607).

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

It is not a de Polignac number, because 20103603 - 2² = 20103599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20103607) 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, 257700 + ... + 257777.

It is an arithmetic number, because the mean of its divisors is an integer number (3608346).

Almost surely, 2^20103603 is an apocalyptic number.

20103603 is a deficient number, since it is larger than the sum of its proper divisors (8763165).

20103603 is a wasteful number, since it uses less digits than its factorization.

20103603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515493.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20103603 is about 4483.7041606243. The cubic root of 20103603 is about 271.9096576772.

Adding to 20103603 its reverse (30630102), we get a palindrome (50733705).

It can be divided in two parts, 20103 and 603, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 20103603 in words is "twenty million, one hundred three thousand, six hundred three".