30513421312 has 88 divisors (see below), whose sum is σ = 70456921200. Its totient is φ = 13053788160.

The previous prime is 30513421291. The next prime is 30513421313. The reversal of 30513421312 is 21312431503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30513421313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111814 + ... + 271162.

Almost surely, 2^30513421312 is an apocalyptic number.

30513421312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30513421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35228460600).

30513421312 is an abundant number, since it is smaller than the sum of its proper divisors (39943499888).

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

30513421312 is a wasteful number, since it uses less digits than its factorization.

30513421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159397 (or 159379 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 30513421312 its reverse (21312431503), we get a palindrome (51825852815).

The spelling of 30513421312 in words is "thirty billion, five hundred thirteen million, four hundred twenty-one thousand, three hundred twelve".