201311311 has 8 divisors (see below), whose sum is σ = 202544640. Its totient is φ = 200082432.

The previous prime is 201311309. The next prime is 201311323. The reversal of 201311311 is 113113102.

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 201311311 - 2¹ = 201311309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201311291 and 201311300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201381311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134455 + ... + 135943.

It is an arithmetic number, because the mean of its divisors is an integer number (25318080).

Almost surely, 2^201311311 is an apocalyptic number.

201311311 is a deficient number, since it is larger than the sum of its proper divisors (1233329).

201311311 is a wasteful number, since it uses less digits than its factorization.

201311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 201311311 is about 14188.4217233630. The cubic root of 201311311 is about 586.0788633393.

Adding to 201311311 its reverse (113113102), we get a palindrome (314424413).

The spelling of 201311311 in words is "two hundred one million, three hundred eleven thousand, three hundred eleven".