30112123402 has 16 divisors (see below), whose sum is σ = 45456642720. Its totient is φ = 14960171248.

The previous prime is 30112123331. The next prime is 30112123421. The reversal of 30112123402 is 20432121103.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30112123402.

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 7 ways as a sum of consecutive naturals, for example, 165933 + ... + 296239.

It is an arithmetic number, because the mean of its divisors is an integer number (2841040170).

Almost surely, 2^30112123402 is an apocalyptic number.

30112123402 is a deficient number, since it is larger than the sum of its proper divisors (15344519318).

30112123402 is a wasteful number, since it uses less digits than its factorization.

30112123402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131045.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30112123402 its reverse (20432121103), we get a palindrome (50544244505).

The spelling of 30112123402 in words is "thirty billion, one hundred twelve million, one hundred twenty-three thousand, four hundred two".