30131120 has 20 divisors (see below), whose sum is σ = 70055040. Its totient is φ = 12052416.

The previous prime is 30131113. The next prime is 30131137. The reversal of 30131120 is 2113103.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188240 + ... + 188399.

It is an arithmetic number, because the mean of its divisors is an integer number (3502752).

Almost surely, 2^30131120 is an apocalyptic number.

It is an amenable number.

30131120 is an abundant number, since it is smaller than the sum of its proper divisors (39923920).

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

30131120 is a wasteful number, since it uses less digits than its factorization.

30131120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376652 (or 376646 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30131120 is about 5489.1820884354. The cubic root of 30131120 is about 311.1752819255.

Adding to 30131120 its reverse (2113103), we get a palindrome (32244223).

The spelling of 30131120 in words is "thirty million, one hundred thirty-one thousand, one hundred twenty".