211130230312 has 8 divisors (see below), whose sum is σ = 395869181850. Its totient is φ = 105565115152.

The previous prime is 211130230249. The next prime is 211130230349. The reversal of 211130230312 is 213032031112.

It can be written as a sum of positive squares in only one way, i.e., 193471541316 + 17658688996 = 439854^2 + 132886^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 211130230312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13195639387 + ... + 13195639402.

Almost surely, 2^211130230312 is an apocalyptic number.

It is an amenable number.

211130230312 is a deficient number, since it is larger than the sum of its proper divisors (184738951538).

211130230312 is a wasteful number, since it uses less digits than its factorization.

211130230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26391278795 (or 26391278791 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211130230312 its reverse (213032031112), we get a palindrome (424162261424).

The spelling of 211130230312 in words is "two hundred eleven billion, one hundred thirty million, two hundred thirty thousand, three hundred twelve".