311311311111 has 12 divisors (see below), whose sum is σ = 450710402688. Its totient is φ = 207061562304.

The previous prime is 311311311107. The next prime is 311311311151. The reversal of 311311311111 is 111113113113.

311311311111 is a `hidden beast` number, since 31 + 1 + 311 + 311 + 1 + 11 = 666.

It is not a de Polignac number, because 311311311111 - 2² = 311311311107 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311311311151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39938535 + ... + 39946328.

It is an arithmetic number, because the mean of its divisors is an integer number (37559200224).

Almost surely, 2^311311311111 is an apocalyptic number.

311311311111 is a deficient number, since it is larger than the sum of its proper divisors (139399091577).

311311311111 is a wasteful number, since it uses less digits than its factorization.

311311311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79885302 (or 79885299 counting only the distinct ones).

The product of its digits is 27, while the sum is 18.

Adding to 311311311111 its reverse (111113113113), we get a palindrome (422424424224).

It can be divided in two parts, 3113113 and 11111, that multiplied together give a palindrome (34589798543).

The spelling of 311311311111 in words is "three hundred eleven billion, three hundred eleven million, three hundred eleven thousand, one hundred eleven".