231324131113 has 4 divisors (see below), whose sum is σ = 232797533380. Its totient is φ = 229850728848.

The previous prime is 231324131099. The next prime is 231324131123. The reversal of 231324131113 is 311131423132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 154002874624 + 77321256489 = 392432^2 + 278067^2 .

It is a cyclic number.

It is not a de Polignac number, because 231324131113 - 2⁹ = 231324130601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231324131123) 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, 736700898 + ... + 736701211.

It is an arithmetic number, because the mean of its divisors is an integer number (58199383345).

Almost surely, 2^231324131113 is an apocalyptic number.

It is an amenable number.

231324131113 is a deficient number, since it is larger than the sum of its proper divisors (1473402267).

231324131113 is a wasteful number, since it uses less digits than its factorization.

231324131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473402266.

The product of its digits is 1296, while the sum is 25.

Adding to 231324131113 its reverse (311131423132), we get a palindrome (542455554245).

The spelling of 231324131113 in words is "two hundred thirty-one billion, three hundred twenty-four million, one hundred thirty-one thousand, one hundred thirteen".