30231320212 has 6 divisors (see below), whose sum is σ = 52904810378. Its totient is φ = 15115660104.

The previous prime is 30231320209. The next prime is 30231320219. The reversal of 30231320212 is 21202313203.

It can be written as a sum of positive squares in only one way, i.e., 24066557956 + 6164762256 = 155134^2 + 78516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30231320212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231320219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778915023 + ... + 3778915030.

Almost surely, 2^30231320212 is an apocalyptic number.

It is an amenable number.

30231320212 is a deficient number, since it is larger than the sum of its proper divisors (22673490166).

30231320212 is a wasteful number, since it uses less digits than its factorization.

30231320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557830057 (or 7557830055 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30231320212 its reverse (21202313203), we get a palindrome (51433633415).

The spelling of 30231320212 in words is "thirty billion, two hundred thirty-one million, three hundred twenty thousand, two hundred twelve".