30434111021 has 16 divisors (see below), whose sum is σ = 31549432320. Its totient is φ = 29344336560.

The previous prime is 30434111009. The next prime is 30434111047. The reversal of 30434111021 is 12011143403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30434111021 is a prime.

It is a super-2 number, since 2×30434111021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30434110984 and 30434111002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30434111621) 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 15 ways as a sum of consecutive naturals, for example, 638210 + ... + 684236.

It is an arithmetic number, because the mean of its divisors is an integer number (1971839520).

Almost surely, 2^30434111021 is an apocalyptic number.

It is an amenable number.

30434111021 is a deficient number, since it is larger than the sum of its proper divisors (1115321299).

30434111021 is a wasteful number, since it uses less digits than its factorization.

30434111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46304.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30434111021 its reverse (12011143403), we get a palindrome (42445254424).

The spelling of 30434111021 in words is "thirty billion, four hundred thirty-four million, one hundred eleven thousand, twenty-one".