30123112 has 16 divisors (see below), whose sum is σ = 58428900. Its totient is φ = 14542080.

The previous prime is 30123109. The next prime is 30123139. The reversal of 30123112 is 21132103.

It can be written as a sum of positive squares in 2 ways, for example, as 29746116 + 376996 = 5454^2 + 614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30123092 and 30123101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64689 + ... + 65152.

Almost surely, 2^30123112 is an apocalyptic number.

It is an amenable number.

30123112 is a deficient number, since it is larger than the sum of its proper divisors (28305788).

30123112 is a wasteful number, since it uses less digits than its factorization.

30123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129876 (or 129872 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30123112 is about 5488.4526052431. The cubic root of 30123112 is about 311.1477122849.

Adding to 30123112 its reverse (21132103), we get a palindrome (51255215).

The spelling of 30123112 in words is "thirty million, one hundred twenty-three thousand, one hundred twelve".