13230311231 has 4 divisors (see below), whose sum is σ = 13232427264. Its totient is φ = 13228195200.

The previous prime is 13230311221. The next prime is 13230311239. The reversal of 13230311231 is 13211303231.

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

It is a cyclic number.

It is not a de Polignac number, because 13230311231 - 2¹⁰ = 13230310207 is a prime.

It is a super-2 number, since 2×13230311231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230311239) 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, 1048610 + ... + 1061151.

It is an arithmetic number, because the mean of its divisors is an integer number (3308106816).

Almost surely, 2^13230311231 is an apocalyptic number.

13230311231 is a deficient number, since it is larger than the sum of its proper divisors (2116033).

13230311231 is an equidigital number, since it uses as much as digits as its factorization.

13230311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116032.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13230311231 its reverse (13211303231), we get a palindrome (26441614462).

The spelling of 13230311231 in words is "thirteen billion, two hundred thirty million, three hundred eleven thousand, two hundred thirty-one".