30312005512 has 32 divisors (see below), whose sum is σ = 57346555680. Its totient is φ = 15020121600.

The previous prime is 30312005419. The next prime is 30312005513. The reversal of 30312005512 is 21550021303.

It is not an unprimeable number, because it can be changed into a prime (30312005513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427387 + ... + 493237.

It is an arithmetic number, because the mean of its divisors is an integer number (1792079865).

Almost surely, 2^30312005512 is an apocalyptic number.

It is an amenable number.

30312005512 is a deficient number, since it is larger than the sum of its proper divisors (27034550168).

30312005512 is a wasteful number, since it uses less digits than its factorization.

30312005512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66373 (or 66369 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 30312005512 its reverse (21550021303), we get a palindrome (51862026815).

The spelling of 30312005512 in words is "thirty billion, three hundred twelve million, five thousand, five hundred twelve".