30101123312 has 80 divisors (see below), whose sum is σ = 66303152160. Its totient is φ = 13123731456.

The previous prime is 30101123303. The next prime is 30101123333. The reversal of 30101123312 is 21332110103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384268 + ... + 1405844.

It is an arithmetic number, because the mean of its divisors is an integer number (828789402).

Almost surely, 2^30101123312 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 30101123312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33151576080).

30101123312 is an abundant number, since it is smaller than the sum of its proper divisors (36202028848).

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

30101123312 is a wasteful number, since it uses less digits than its factorization.

30101123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21970 (or 21964 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30101123312 its reverse (21332110103), we get a palindrome (51433233415).

The spelling of 30101123312 in words is "thirty billion, one hundred one million, one hundred twenty-three thousand, three hundred twelve".