231326383623131 has 4 divisors (see below), whose sum is σ = 231326414455752. Its totient is φ = 231326352790512.

The previous prime is 231326383623103. The next prime is 231326383623289. The reversal of 231326383623131 is 131326383623132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231326383623131 - 2²² = 231326379428827 is a prime.

It is a super-2 number, since 2×231326383623131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231326383623631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3932375 + ... + 21865871.

It is an arithmetic number, because the mean of its divisors is an integer number (57831603613938).

Almost surely, 2^{231326383623131} is an apocalyptic number.

231326383623131 is a deficient number, since it is larger than the sum of its proper divisors (30832621).

231326383623131 is a wasteful number, since it uses less digits than its factorization.

231326383623131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30832620.

The product of its digits is 1679616, while the sum is 47.

Subtracting from 231326383623131 its reverse (131326383623132), we obtain a palindrome (99999999999999).

The spelling of 231326383623131 in words is "two hundred thirty-one trillion, three hundred twenty-six billion, three hundred eighty-three million, six hundred twenty-three thousand, one hundred thirty-one".