30431124421 has 4 divisors (see below), whose sum is σ = 30475680192. Its totient is φ = 30386568652.

The previous prime is 30431124401. The next prime is 30431124481. The reversal of 30431124421 is 12442113403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30431124421 - 2⁷ = 30431124293 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 (30431124401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22276861 + ... + 22278226.

It is an arithmetic number, because the mean of its divisors is an integer number (7618920048).

Almost surely, 2^30431124421 is an apocalyptic number.

It is an amenable number.

30431124421 is a deficient number, since it is larger than the sum of its proper divisors (44555771).

30431124421 is an equidigital number, since it uses as much as digits as its factorization.

30431124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44555770.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 30431124421 its reverse (12442113403), we get a palindrome (42873237824).

The spelling of 30431124421 in words is "thirty billion, four hundred thirty-one million, one hundred twenty-four thousand, four hundred twenty-one".