203111126312 has 8 divisors (see below), whose sum is σ = 380833361850. Its totient is φ = 101555563152.

The previous prime is 203111126311. The next prime is 203111126333. The reversal of 203111126312 is 213621111302.

It can be written as a sum of positive squares in only one way, i.e., 183641389156 + 19469737156 = 428534^2 + 139534^2 .

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

It is not an unprimeable number, because it can be changed into a prime (203111126311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694445387 + ... + 12694445402.

Almost surely, 2^203111126312 is an apocalyptic number.

It is an amenable number.

203111126312 is a deficient number, since it is larger than the sum of its proper divisors (177722235538).

203111126312 is a wasteful number, since it uses less digits than its factorization.

203111126312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25388890795 (or 25388890791 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 203111126312 its reverse (213621111302), we get a palindrome (416732237614).

The spelling of 203111126312 in words is "two hundred three billion, one hundred eleven million, one hundred twenty-six thousand, three hundred twelve".