30123232112 has 30 divisors (see below), whose sum is σ = 61011662712. Its totient is φ = 14406759136.

The previous prime is 30123232091. The next prime is 30123232129. The reversal of 30123232112 is 21123232103.

It is a super-2 number, since 2×30123232112² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1771028 + ... + 1787955.

Almost surely, 2^30123232112 is an apocalyptic number.

It is an amenable number.

30123232112 is an abundant number, since it is smaller than the sum of its proper divisors (30888430600).

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

30123232112 is a wasteful number, since it uses less digits than its factorization.

30123232112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559037 (or 3559008 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30123232112 its reverse (21123232103), we get a palindrome (51246464215).

Subtracting from 30123232112 its reverse (21123232103), we obtain a palindrome (9000000009).

The spelling of 30123232112 in words is "thirty billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred twelve".