30031120312 has 8 divisors (see below), whose sum is σ = 56308350600. Its totient is φ = 15015560152.

The previous prime is 30031120303. The next prime is 30031120319. The reversal of 30031120312 is 21302113003.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031120319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1876945012 + ... + 1876945027.

It is an arithmetic number, because the mean of its divisors is an integer number (7038543825).

Almost surely, 2^30031120312 is an apocalyptic number.

It is an amenable number.

30031120312 is a deficient number, since it is larger than the sum of its proper divisors (26277230288).

30031120312 is a wasteful number, since it uses less digits than its factorization.

30031120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753890045 (or 3753890041 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30031120312 its reverse (21302113003), we get a palindrome (51333233315).

The spelling of 30031120312 in words is "thirty billion, thirty-one million, one hundred twenty thousand, three hundred twelve".