311431334313311 has 8 divisors (see below), whose sum is σ = 318682113748944. Its totient is φ = 304180927162560.

The previous prime is 311431334313277. The next prime is 311431334313331. The reversal of 311431334313311 is 113313433134113.

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-311431334313311 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 (311431334313331) 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, 91378310 + ... + 94725171.

It is an arithmetic number, because the mean of its divisors is an integer number (39835264218618).

Almost surely, 2^{311431334313311} is an apocalyptic number.

311431334313311 is a deficient number, since it is larger than the sum of its proper divisors (7250779435633).

311431334313311 is a wasteful number, since it uses less digits than its factorization.

311431334313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186142441.

The product of its digits is 34992, while the sum is 35.

Adding to 311431334313311 its reverse (113313433134113), we get a palindrome (424744767447424).

The spelling of 311431334313311 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred thirty-four million, three hundred thirteen thousand, three hundred eleven".