30433012421 has 4 divisors (see below), whose sum is σ = 34780585632. Its totient is φ = 26085439212.

The previous prime is 30433012411. The next prime is 30433012447. The reversal of 30433012421 is 12421033403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12421033403 = 8429 ⋅1473607.

It is a de Polignac number, because none of the positive numbers 2^k-30433012421 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 (30433012411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173786595 + ... + 2173786608.

It is an arithmetic number, because the mean of its divisors is an integer number (8695146408).

Almost surely, 2^30433012421 is an apocalyptic number.

It is an amenable number.

30433012421 is a deficient number, since it is larger than the sum of its proper divisors (4347573211).

30433012421 is an equidigital number, since it uses as much as digits as its factorization.

30433012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347573210.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30433012421 its reverse (12421033403), we get a palindrome (42854045824).

The spelling of 30433012421 in words is "thirty billion, four hundred thirty-three million, twelve thousand, four hundred twenty-one".