311431322234213 has 16 divisors (see below), whose sum is σ = 330155683444224. Its totient is φ = 292752115637760.

The previous prime is 311431322234203. The next prime is 311431322234297. The reversal of 311431322234213 is 312432223134113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 311431322234213 - 2¹² = 311431322230117 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 (311431322234203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56424878 + ... + 61697888.

It is an arithmetic number, because the mean of its divisors is an integer number (20634730215264).

Almost surely, 2^{311431322234213} is an apocalyptic number.

It is an amenable number.

311431322234213 is a deficient number, since it is larger than the sum of its proper divisors (18724361210011).

311431322234213 is a wasteful number, since it uses less digits than its factorization.

311431322234213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277292.

The product of its digits is 62208, while the sum is 35.

Adding to 311431322234213 its reverse (312432223134113), we get a palindrome (623863545368326).

The spelling of 311431322234213 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred twenty-two million, two hundred thirty-four thousand, two hundred thirteen".