311103040213 has 12 divisors (see below), whose sum is σ = 361914472812. Its totient is φ = 266645675520.

The previous prime is 311103040211. The next prime is 311103040219. The reversal of 311103040213 is 312040301113.

It can be written as a sum of positive squares in 2 ways, for example, as 276500343889 + 34602696324 = 525833^2 + 186018^2 .

It is not a de Polignac number, because 311103040213 - 2¹ = 311103040211 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 (311103040211) 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, 830431 + ... + 1145347.

It is an arithmetic number, because the mean of its divisors is an integer number (30159539401).

Almost surely, 2^311103040213 is an apocalyptic number.

It is an amenable number.

311103040213 is a deficient number, since it is larger than the sum of its proper divisors (50811432599).

311103040213 is a wasteful number, since it uses less digits than its factorization.

311103040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335092 (or 335085 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311103040213 its reverse (312040301113), we get a palindrome (623143341326).

The spelling of 311103040213 in words is "three hundred eleven billion, one hundred three million, forty thousand, two hundred thirteen".