30638103 has 4 divisors (see below), whose sum is σ = 40850808. Its totient is φ = 20425400.

The previous prime is 30638087. The next prime is 30638117. The reversal of 30638103 is 30183603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30183603 = 3 ⋅10061201.

It is a cyclic number.

It is not a de Polignac number, because 30638103 - 2⁴ = 30638087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30638303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106348 + ... + 5106353.

It is an arithmetic number, because the mean of its divisors is an integer number (10212702).

Almost surely, 2^30638103 is an apocalyptic number.

30638103 is a deficient number, since it is larger than the sum of its proper divisors (10212705).

30638103 is a wasteful number, since it uses less digits than its factorization.

30638103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212704.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30638103 is about 5535.1696450967. The cubic root of 30638103 is about 312.9108511808.

The spelling of 30638103 in words is "thirty million, six hundred thirty-eight thousand, one hundred three".