231232212123 has 16 divisors (see below), whose sum is σ = 337677766272. Its totient is φ = 139582400000.

The previous prime is 231232212121. The next prime is 231232212157. The reversal of 231232212123 is 321212232132.

It is a cyclic number.

It is not a de Polignac number, because 231232212123 - 2¹ = 231232212121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231232212093 and 231232212102.

It is not an unprimeable number, because it can be changed into a prime (231232212121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13949958 + ... + 13966523.

It is an arithmetic number, because the mean of its divisors is an integer number (21104860392).

Almost surely, 2^231232212123 is an apocalyptic number.

231232212123 is a deficient number, since it is larger than the sum of its proper divisors (106445554149).

231232212123 is a wasteful number, since it uses less digits than its factorization.

231232212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27916746.

The product of its digits is 1728, while the sum is 24.

Adding to 231232212123 its reverse (321212232132), we get a palindrome (552444444255).

The spelling of 231232212123 in words is "two hundred thirty-one billion, two hundred thirty-two million, two hundred twelve thousand, one hundred twenty-three".