231011213122223 has 4 divisors (see below), whose sum is σ = 232301778558840. Its totient is φ = 229720647685608.

The previous prime is 231011213122219. The next prime is 231011213122273. The reversal of 231011213122223 is 322221312110132.

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 231011213122223 - 2² = 231011213122219 is a prime.

It is a super-2 number, since 2×231011213122223² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231011213122192 and 231011213122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231011213122273) 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, 645282718040 + ... + 645282718397.

It is an arithmetic number, because the mean of its divisors is an integer number (58075444639710).

Almost surely, 2^{231011213122223} is an apocalyptic number.

231011213122223 is a deficient number, since it is larger than the sum of its proper divisors (1290565436617).

231011213122223 is a wasteful number, since it uses less digits than its factorization.

231011213122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290565436616.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 231011213122223 its reverse (322221312110132), we get a palindrome (553232525232355).

The spelling of 231011213122223 in words is "two hundred thirty-one trillion, eleven billion, two hundred thirteen million, one hundred twenty-two thousand, two hundred twenty-three".