30431042120 has 64 divisors (see below), whose sum is σ = 73115827200. Its totient is φ = 11373546240.

The previous prime is 30431042039. The next prime is 30431042189. The reversal of 30431042120 is 2124013403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30431042092 and 30431042101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387164 + ... + 459083.

It is an arithmetic number, because the mean of its divisors is an integer number (1142434800).

Almost surely, 2^30431042120 is an apocalyptic number.

It is an amenable number.

30431042120 is an abundant number, since it is smaller than the sum of its proper divisors (42684785080).

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

30431042120 is a wasteful number, since it uses less digits than its factorization.

30431042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846318 (or 846314 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30431042120 its reverse (2124013403), we get a palindrome (32555055523).

The spelling of 30431042120 in words is "thirty billion, four hundred thirty-one million, forty-two thousand, one hundred twenty".