201242311 has 8 divisors (see below), whose sum is σ = 215278560. Its totient is φ = 187450368.

The previous prime is 201242291. The next prime is 201242317. The reversal of 201242311 is 113242102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201242311 - 2⁷ = 201242183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201242317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59371 + ... + 62668.

It is an arithmetic number, because the mean of its divisors is an integer number (26909820).

Almost surely, 2^201242311 is an apocalyptic number.

201242311 is a deficient number, since it is larger than the sum of its proper divisors (14036249).

201242311 is a wasteful number, since it uses less digits than its factorization.

201242311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122153.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 201242311 is about 14185.9899548815. The cubic root of 201242311 is about 586.0118956455.

Adding to 201242311 its reverse (113242102), we get a palindrome (314484413).

The spelling of 201242311 in words is "two hundred one million, two hundred forty-two thousand, three hundred eleven".