311311231311 has 8 divisors (see below), whose sum is σ = 424734703360. Its totient is φ = 202714290072.

The previous prime is 311311231291. The next prime is 311311231339. The reversal of 311311231311 is 113132113113.

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

It is not a de Polignac number, because 311311231311 - 2¹⁷ = 311311100239 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 (311311231411) 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, 1206632551 + ... + 1206632808.

It is an arithmetic number, because the mean of its divisors is an integer number (53091837920).

Almost surely, 2^311311231311 is an apocalyptic number.

311311231311 is a deficient number, since it is larger than the sum of its proper divisors (113423472049).

311311231311 is a wasteful number, since it uses less digits than its factorization.

311311231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413265405.

The product of its digits is 162, while the sum is 21.

Adding to 311311231311 its reverse (113132113113), we get a palindrome (424443344424).

The spelling of 311311231311 in words is "three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, three hundred eleven".