30431333421 has 16 divisors (see below), whose sum is σ = 45086158720. Its totient is φ = 20286339840.

The previous prime is 30431333399. The next prime is 30431333437. The reversal of 30431333421 is 12433313403.

30431333421 is a `hidden beast` number, since 3 + 0 + 4 + 313 + 3 + 342 + 1 = 666.

It is not a de Polignac number, because 30431333421 - 2¹¹ = 30431331373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431333321) 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, 794061 + ... + 831501.

It is an arithmetic number, because the mean of its divisors is an integer number (2817884920).

Almost surely, 2^30431333421 is an apocalyptic number.

It is an amenable number.

30431333421 is a deficient number, since it is larger than the sum of its proper divisors (14654825299).

30431333421 is a wasteful number, since it uses less digits than its factorization.

30431333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67553 (or 67547 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 30431333421 its reverse (12433313403), we get a palindrome (42864646824).

The spelling of 30431333421 in words is "thirty billion, four hundred thirty-one million, three hundred thirty-three thousand, four hundred twenty-one".