231313132223 has 4 divisors (see below), whose sum is σ = 231524764728. Its totient is φ = 231101499720.

The previous prime is 231313132207. The next prime is 231313132243. The reversal of 231313132223 is 322231313132.

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 231313132223 - 2⁴ = 231313132207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231313132192 and 231313132201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313132243) 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, 105814613 + ... + 105816798.

It is an arithmetic number, because the mean of its divisors is an integer number (57881191182).

Almost surely, 2^231313132223 is an apocalyptic number.

231313132223 is a deficient number, since it is larger than the sum of its proper divisors (211632505).

231313132223 is a wasteful number, since it uses less digits than its factorization.

231313132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211632504.

The product of its digits is 3888, while the sum is 26.

Adding to 231313132223 its reverse (322231313132), we get a palindrome (553544445355).

The spelling of 231313132223 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred thirty-two thousand, two hundred twenty-three".