231311213120311 has 8 divisors (see below), whose sum is σ = 231701146945920. Its totient is φ = 230921429191992.

The previous prime is 231311213120179. The next prime is 231311213120327. The reversal of 231311213120311 is 113021312113132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231311213120311 - 2¹⁵ = 231311213087543 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 (231311213720311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34385245 + ... + 40558198.

It is an arithmetic number, because the mean of its divisors is an integer number (28962643368240).

Almost surely, 2^{231311213120311} is an apocalyptic number.

231311213120311 is a deficient number, since it is larger than the sum of its proper divisors (389933825609).

231311213120311 is an equidigital number, since it uses as much as digits as its factorization.

231311213120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74948645.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 231311213120311 its reverse (113021312113132), we get a palindrome (344332525233443).

The spelling of 231311213120311 in words is "two hundred thirty-one trillion, three hundred eleven billion, two hundred thirteen million, one hundred twenty thousand, three hundred eleven".