30421310420 has 12 divisors (see below), whose sum is σ = 63884751924. Its totient is φ = 12168524160.

The previous prime is 30421310411. The next prime is 30421310459. The reversal of 30421310420 is 2401312403.

It can be written as a sum of positive squares in 2 ways, for example, as 3717828676 + 26703481744 = 60974^2 + 163412^2 .

It is a super-2 number, since 2×30421310420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1521065521 = 30421310420 / (3 + 0 + 4 + 2 + 1 + 3 + 1 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30421310392 and 30421310401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760532741 + ... + 760532780.

It is an arithmetic number, because the mean of its divisors is an integer number (5323729327).

Almost surely, 2^30421310420 is an apocalyptic number.

It is an amenable number.

30421310420 is an abundant number, since it is smaller than the sum of its proper divisors (33463441504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30421310420 is a wasteful number, since it uses less digits than its factorization.

30421310420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521065530 (or 1521065528 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30421310420 its reverse (2401312403), we get a palindrome (32822622823).

The spelling of 30421310420 in words is "thirty billion, four hundred twenty-one million, three hundred ten thousand, four hundred twenty".