30111232133 has 4 divisors (see below), whose sum is σ = 31882481100. Its totient is φ = 28339983168.

The previous prime is 30111232117. The next prime is 30111232163. The reversal of 30111232133 is 33123211103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23844609889 + 6266622244 = 154417^2 + 79162^2 .

It is a cyclic number.

It is not a de Polignac number, because 30111232133 - 2⁴ = 30111232117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111232163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885624458 + ... + 885624491.

It is an arithmetic number, because the mean of its divisors is an integer number (7970620275).

Almost surely, 2^30111232133 is an apocalyptic number.

It is an amenable number.

30111232133 is a deficient number, since it is larger than the sum of its proper divisors (1771248967).

30111232133 is a wasteful number, since it uses less digits than its factorization.

30111232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771248966.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30111232133 its reverse (33123211103), we get a palindrome (63234443236).

The spelling of 30111232133 in words is "thirty billion, one hundred eleven million, two hundred thirty-two thousand, one hundred thirty-three".