30440330421 has 32 divisors (see below), whose sum is σ = 44317290240. Its totient is φ = 18530164224.

The previous prime is 30440330399. The next prime is 30440330447. The reversal of 30440330421 is 12403304403.

It is not a de Polignac number, because 30440330421 - 2³⁴ = 13260461237 is a prime.

It is a super-2 number, since 2×30440330421² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30440330391 and 30440330400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440330461) 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 31 ways as a sum of consecutive naturals, for example, 22825 + ... + 247793.

It is an arithmetic number, because the mean of its divisors is an integer number (1384915320).

Almost surely, 2^30440330421 is an apocalyptic number.

It is an amenable number.

30440330421 is a deficient number, since it is larger than the sum of its proper divisors (13876959819).

30440330421 is a wasteful number, since it uses less digits than its factorization.

30440330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225085.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 30440330421 its reverse (12403304403), we get a palindrome (42843634824).

The spelling of 30440330421 in words is "thirty billion, four hundred forty million, three hundred thirty thousand, four hundred twenty-one".