30312031420 has 96 divisors (see below), whose sum is σ = 70522099200. Its totient is φ = 10851590400.

The previous prime is 30312031357. The next prime is 30312031457. The reversal of 30312031420 is 2413021303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19196191 + ... + 19197769.

It is an arithmetic number, because the mean of its divisors is an integer number (734605200).

Almost surely, 2^30312031420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30312031420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35261049600).

30312031420 is an abundant number, since it is smaller than the sum of its proper divisors (40210067780).

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

30312031420 is a wasteful number, since it uses less digits than its factorization.

30312031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899 (or 2897 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30312031420 its reverse (2413021303), we get a palindrome (32725052723).

The spelling of 30312031420 in words is "thirty billion, three hundred twelve million, thirty-one thousand, four hundred twenty".