30211011312 has 80 divisors (see below), whose sum is σ = 80644362240. Its totient is φ = 9735609600.

The previous prime is 30211011277. The next prime is 30211011323. The reversal of 30211011312 is 21311011203.

It is a happy number.

It is a super-2 number, since 2×30211011312² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30211011291 and 30211011300.

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, 1536262 + ... + 1555802.

It is an arithmetic number, because the mean of its divisors is an integer number (1008054528).

Almost surely, 2^30211011312 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 30211011312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40322181120).

30211011312 is an abundant number, since it is smaller than the sum of its proper divisors (50433350928).

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

30211011312 is a wasteful number, since it uses less digits than its factorization.

30211011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20622 (or 20616 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 30211011312 its reverse (21311011203), we get a palindrome (51522022515).

The spelling of 30211011312 in words is "thirty billion, two hundred eleven million, eleven thousand, three hundred twelve".