30111232231 has 4 divisors (see below), whose sum is σ = 30161502000. Its totient is φ = 30060962464.

The previous prime is 30111232223. The next prime is 30111232267. The reversal of 30111232231 is 13223211103.

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

It is a cyclic number.

It is not a de Polignac number, because 30111232231 - 2³ = 30111232223 is a prime.

It is a super-2 number, since 2×30111232231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30111232199 and 30111232208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111232211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25133986 + ... + 25135183.

It is an arithmetic number, because the mean of its divisors is an integer number (7540375500).

Almost surely, 2^30111232231 is an apocalyptic number.

30111232231 is a deficient number, since it is larger than the sum of its proper divisors (50269769).

30111232231 is an equidigital number, since it uses as much as digits as its factorization.

30111232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50269768.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30111232231 its reverse (13223211103), we get a palindrome (43334443334).

The spelling of 30111232231 in words is "thirty billion, one hundred eleven million, two hundred thirty-two thousand, two hundred thirty-one".