30303123112 has 8 divisors (see below), whose sum is σ = 56818355850. Its totient is φ = 15151561552.

The previous prime is 30303123077. The next prime is 30303123119. The reversal of 30303123112 is 21132130303.

It can be written as a sum of positive squares in only one way, i.e., 22175379396 + 8127743716 = 148914^2 + 90154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30303123112.

It is not an unprimeable number, because it can be changed into a prime (30303123119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893945187 + ... + 1893945202.

Almost surely, 2^30303123112 is an apocalyptic number.

It is an amenable number.

30303123112 is a deficient number, since it is larger than the sum of its proper divisors (26515232738).

30303123112 is a wasteful number, since it uses less digits than its factorization.

30303123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787890395 (or 3787890391 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30303123112 its reverse (21132130303), we get a palindrome (51435253415).

The spelling of 30303123112 in words is "thirty billion, three hundred three million, one hundred twenty-three thousand, one hundred twelve".