201312242 has 4 divisors (see below), whose sum is σ = 301968366. Its totient is φ = 100656120.

The previous prime is 201312217. The next prime is 201312257. The reversal of 201312242 is 242213102.

201312242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123854641 + 77457601 = 11129^2 + 8801^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201312242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50328059 + ... + 50328062.

Almost surely, 2^201312242 is an apocalyptic number.

201312242 is a deficient number, since it is larger than the sum of its proper divisors (100656124).

201312242 is a wasteful number, since it uses less digits than its factorization.

201312242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100656123.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 201312242 is about 14188.4545317663. The cubic root of 201312242 is about 586.0797668132.

Adding to 201312242 its reverse (242213102), we get a palindrome (443525344).

The spelling of 201312242 in words is "two hundred one million, three hundred twelve thousand, two hundred forty-two".