30421434321 has 24 divisors (see below), whose sum is σ = 45980952576. Its totient is φ = 19357859520.

The previous prime is 30421434317. The next prime is 30421434361. The reversal of 30421434321 is 12343412403.

30421434321 is a `hidden beast` number, since 304 + 2 + 1 + 4 + 34 + 321 = 666.

It is not a de Polignac number, because 30421434321 - 2² = 30421434317 is a prime.

It is a super-2 number, since 2×30421434321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30421434361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726465 + ... + 767198.

It is an arithmetic number, because the mean of its divisors is an integer number (1915873024).

Almost surely, 2^30421434321 is an apocalyptic number.

30421434321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30421434321 is a deficient number, since it is larger than the sum of its proper divisors (15559518255).

30421434321 is a wasteful number, since it uses less digits than its factorization.

30421434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493773 (or 1493770 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 30421434321 its reverse (12343412403), we get a palindrome (42764846724).

The spelling of 30421434321 in words is "thirty billion, four hundred twenty-one million, four hundred thirty-four thousand, three hundred twenty-one".