201223030312 has 8 divisors (see below), whose sum is σ = 377293181850. Its totient is φ = 100611515152.

The previous prime is 201223030247. The next prime is 201223030313. The reversal of 201223030312 is 213030322102.

It can be written as a sum of positive squares in only one way, i.e., 145293618276 + 55929412036 = 381174^2 + 236494^2 .

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 201223030312.

It is not an unprimeable number, because it can be changed into a prime (201223030313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12576439387 + ... + 12576439402.

Almost surely, 2^201223030312 is an apocalyptic number.

It is an amenable number.

201223030312 is a deficient number, since it is larger than the sum of its proper divisors (176070151538).

201223030312 is a wasteful number, since it uses less digits than its factorization.

201223030312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25152878795 (or 25152878791 counting only the distinct ones).

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

Adding to 201223030312 its reverse (213030322102), we get a palindrome (414253352414).

The spelling of 201223030312 in words is "two hundred one billion, two hundred twenty-three million, thirty thousand, three hundred twelve".