30131021112 has 32 divisors (see below), whose sum is σ = 77925056400. Its totient is φ = 9697339904.

The previous prime is 30131021099. The next prime is 30131021143. The reversal of 30131021112 is 21112013103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30131021091 and 30131021100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21645153 + ... + 21646544.

Almost surely, 2^30131021112 is an apocalyptic number.

It is an amenable number.

30131021112 is an abundant number, since it is smaller than the sum of its proper divisors (47794035288).

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

30131021112 is a wasteful number, since it uses less digits than its factorization.

30131021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43291735 (or 43291731 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 30131021112 its reverse (21112013103), we get a palindrome (51243034215).

The spelling of 30131021112 in words is "thirty billion, one hundred thirty-one million, twenty-one thousand, one hundred twelve".