313111331103 has 4 divisors (see below), whose sum is σ = 417481774808. Its totient is φ = 208740887400.

The previous prime is 313111331087. The next prime is 313111331107. The reversal of 313111331103 is 301133111313.

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

It is not a de Polignac number, because 313111331103 - 2⁴ = 313111331087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313111331103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313111331107) 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, 52185221848 + ... + 52185221853.

It is an arithmetic number, because the mean of its divisors is an integer number (104370443702).

Almost surely, 2^313111331103 is an apocalyptic number.

313111331103 is a deficient number, since it is larger than the sum of its proper divisors (104370443705).

313111331103 is a wasteful number, since it uses less digits than its factorization.

313111331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104370443704.

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 313111331103 its reverse (301133111313), we get a palindrome (614244442416).

The spelling of 313111331103 in words is "three hundred thirteen billion, one hundred eleven million, three hundred thirty-one thousand, one hundred three".