30331440412 has 144 divisors (see below), whose sum is σ = 68597867520. Its totient is φ = 11625199488.

The previous prime is 30331440407. The next prime is 30331440413. The reversal of 30331440412 is 21404413303.

It is a super-5 number, since 5×30331440412⁵ (a number of 54 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331440413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12333639 + ... + 12336097.

It is an arithmetic number, because the mean of its divisors is an integer number (476374080).

Almost surely, 2^30331440412 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 30331440412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34298933760).

30331440412 is an abundant number, since it is smaller than the sum of its proper divisors (38266427108).

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

30331440412 is a wasteful number, since it uses less digits than its factorization.

30331440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2631 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30331440412 its reverse (21404413303), we get a palindrome (51735853715).

The spelling of 30331440412 in words is "thirty billion, three hundred thirty-one million, four hundred forty thousand, four hundred twelve".