30311130312 has 128 divisors (see below), whose sum is σ = 88695216000. Its totient is φ = 9564791040.

The previous prime is 30311130277. The next prime is 30311130323. The reversal of 30311130312 is 21303111303.

It is a happy number.

30311130312 is a `hidden beast` number, since 30 + 311 + 13 + 0 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 9408862 + ... + 9412082.

It is an arithmetic number, because the mean of its divisors is an integer number (692931375).

Almost surely, 2^30311130312 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 30311130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44347608000).

30311130312 is an abundant number, since it is smaller than the sum of its proper divisors (58384085688).

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

30311130312 is a wasteful number, since it uses less digits than its factorization.

30311130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30311130312 its reverse (21303111303), we get a palindrome (51614241615).

The spelling of 30311130312 in words is "thirty billion, three hundred eleven million, one hundred thirty thousand, three hundred twelve".