30102103 has 4 divisors (see below), whose sum is σ = 30129408. Its totient is φ = 30074800.

The previous prime is 30102091. The next prime is 30102131. The reversal of 30102103 is 30120103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30102103 - 2⁵ = 30102071 is a prime.

It is a super-2 number, since 2×30102103² = 1812273210045218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30102103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30102503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11926 + ... + 14227.

It is an arithmetic number, because the mean of its divisors is an integer number (7532352).

Almost surely, 2^30102103 is an apocalyptic number.

30102103 is a deficient number, since it is larger than the sum of its proper divisors (27305).

30102103 is a wasteful number, since it uses less digits than its factorization.

30102103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27304.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30102103 is about 5486.5383439834. The cubic root of 30102103 is about 311.0753600595.

Adding to 30102103 its reverse (30120103), we get a palindrome (60222206).

The spelling of 30102103 in words is "thirty million, one hundred two thousand, one hundred three".