311232423213 has 12 divisors (see below), whose sum is σ = 449565689820. Its totient is φ = 207484707456.

The previous prime is 311232423211. The next prime is 311232423221. The reversal of 311232423213 is 312324232113.

311232423213 is a `hidden beast` number, since 3 + 1 + 1 + 23 + 2 + 423 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149244687684 + 161987735529 = 386322^2 + 402477^2 .

It is not a de Polignac number, because 311232423213 - 2¹ = 311232423211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311232423211) 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, 321253 + ... + 851861.

It is an arithmetic number, because the mean of its divisors is an integer number (37463807485).

Almost surely, 2^311232423213 is an apocalyptic number.

It is an amenable number.

311232423213 is a deficient number, since it is larger than the sum of its proper divisors (138333266607).

311232423213 is a wasteful number, since it uses less digits than its factorization.

311232423213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595788 (or 595785 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 311232423213 its reverse (312324232113), we get a palindrome (623556655326).

The spelling of 311232423213 in words is "three hundred eleven billion, two hundred thirty-two million, four hundred twenty-three thousand, two hundred thirteen".