30023113021 has 6 divisors (see below), whose sum is σ = 33000611966. Its totient is φ = 27293739000.

The previous prime is 30023112989. The next prime is 30023113067. The reversal of 30023113021 is 12031132003.

It can be written as a sum of positive squares in only one way, i.e., 29442784921 + 580328100 = 171589^2 + 24090^2 .

It is not a de Polignac number, because 30023113021 - 2⁵ = 30023112989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30023112986 and 30023113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30023113121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124062330 + ... + 124062571.

Almost surely, 2^30023113021 is an apocalyptic number.

It is an amenable number.

30023113021 is a deficient number, since it is larger than the sum of its proper divisors (2977498945).

30023113021 is a wasteful number, since it uses less digits than its factorization.

30023113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248124923 (or 248124912 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30023113021 its reverse (12031132003), we get a palindrome (42054245024).

The spelling of 30023113021 in words is "thirty billion, twenty-three million, one hundred thirteen thousand, twenty-one".