30103120 has 40 divisors (see below), whose sum is σ = 70218720. Its totient is φ = 12001920.

The previous prime is 30103111. The next prime is 30103123. The reversal of 30103120 is 2130103.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30103097 and 30103106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103123) 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, 45351 + ... + 46009.

It is an arithmetic number, because the mean of its divisors is an integer number (1755468).

Almost surely, 2^30103120 is an apocalyptic number.

It is an amenable number.

30103120 is an abundant number, since it is smaller than the sum of its proper divisors (40115600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30103120 is a wasteful number, since it uses less digits than its factorization.

30103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 1237 counting only the distinct ones).

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

The square root of 30103120 is about 5486.6310245906. The cubic root of 30103120 is about 311.0788632486.

Adding to 30103120 its reverse (2130103), we get a palindrome (32233223).

The spelling of 30103120 in words is "thirty million, one hundred three thousand, one hundred twenty".