311220330213311 has 8 divisors (see below), whose sum is σ = 312344935454064. Its totient is φ = 310095732643200.

The previous prime is 311220330213223. The next prime is 311220330213361. The reversal of 311220330213311 is 113312033022113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311220330213311 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 (311220330213361) 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, 86771756 + ... + 90287198.

It is an arithmetic number, because the mean of its divisors is an integer number (39043116931758).

Almost surely, 2^{311220330213311} is an apocalyptic number.

311220330213311 is a deficient number, since it is larger than the sum of its proper divisors (1124605240753).

311220330213311 is a wasteful number, since it uses less digits than its factorization.

311220330213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835321.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 311220330213311 its reverse (113312033022113), we get a palindrome (424532363235424).

The spelling of 311220330213311 in words is "three hundred eleven trillion, two hundred twenty billion, three hundred thirty million, two hundred thirteen thousand, three hundred eleven".