30443020421 has 16 divisors (see below), whose sum is σ = 33730587648. Its totient is φ = 27243590400.

The previous prime is 30443020393. The next prime is 30443020429. The reversal of 30443020421 is 12402034403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30443020421 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 (30443020429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381980 + ... + 454746.

It is an arithmetic number, because the mean of its divisors is an integer number (2108161728).

Almost surely, 2^30443020421 is an apocalyptic number.

It is an amenable number.

30443020421 is a deficient number, since it is larger than the sum of its proper divisors (3287567227).

30443020421 is a wasteful number, since it uses less digits than its factorization.

30443020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73372.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 30443020421 its reverse (12402034403), we get a palindrome (42845054824).

The spelling of 30443020421 in words is "thirty billion, four hundred forty-three million, twenty thousand, four hundred twenty-one".