331312111311 has 4 divisors (see below), whose sum is σ = 441749481752. Its totient is φ = 220874740872.

The previous prime is 331312111289. The next prime is 331312111313. The reversal of 331312111311 is 113111213133.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 331312111311 - 2⁹ = 331312110799 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 (331312111313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55218685216 + ... + 55218685221.

It is an arithmetic number, because the mean of its divisors is an integer number (110437370438).

Almost surely, 2^331312111311 is an apocalyptic number.

331312111311 is a deficient number, since it is larger than the sum of its proper divisors (110437370441).

331312111311 is a wasteful number, since it uses less digits than its factorization.

331312111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110437370440.

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

Adding to 331312111311 its reverse (113111213133), we get a palindrome (444423324444).

The spelling of 331312111311 in words is "three hundred thirty-one billion, three hundred twelve million, one hundred eleven thousand, three hundred eleven".