231222311123 has 16 divisors (see below), whose sum is σ = 246295092960. Its totient is φ = 216313606656.

The previous prime is 231222311077. The next prime is 231222311167. The reversal of 231222311123 is 321113222132.

It is a cyclic number.

It is not a de Polignac number, because 231222311123 - 2²⁴ = 231205533907 is a prime.

It is a super-2 number, since 2×231222311123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231222311183) 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 15 ways as a sum of consecutive naturals, for example, 22102268 + ... + 22112726.

It is an arithmetic number, because the mean of its divisors is an integer number (15393443310).

Almost surely, 2^231222311123 is an apocalyptic number.

231222311123 is a deficient number, since it is larger than the sum of its proper divisors (15072781837).

231222311123 is a wasteful number, since it uses less digits than its factorization.

231222311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18166.

The product of its digits is 864, while the sum is 23.

Adding to 231222311123 its reverse (321113222132), we get a palindrome (552335533255).

The spelling of 231222311123 in words is "two hundred thirty-one billion, two hundred twenty-two million, three hundred eleven thousand, one hundred twenty-three".