30111131023 has 4 divisors (see below), whose sum is σ = 30811389928. Its totient is φ = 29410872120.

The previous prime is 30111131009. The next prime is 30111131059. The reversal of 30111131023 is 32013111103.

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 30111131023 - 2¹⁷ = 30110999951 is a prime.

It is a super-2 number, since 2×30111131023² (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 = 30111130988 and 30111131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111131093) 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, 350129388 + ... + 350129473.

It is an arithmetic number, because the mean of its divisors is an integer number (7702847482).

Almost surely, 2^30111131023 is an apocalyptic number.

30111131023 is a deficient number, since it is larger than the sum of its proper divisors (700258905).

30111131023 is an equidigital number, since it uses as much as digits as its factorization.

30111131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700258904.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 30111131023 its reverse (32013111103), we get a palindrome (62124242126).

The spelling of 30111131023 in words is "thirty billion, one hundred eleven million, one hundred thirty-one thousand, twenty-three".