201232310123 has 32 divisors (see below), whose sum is σ = 230273379840. Its totient is φ = 174318946560.

The previous prime is 201232310113. The next prime is 201232310179. The reversal of 201232310123 is 321013232102.

It is a cyclic number.

It is not a de Polignac number, because 201232310123 - 2⁸ = 201232309867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201232310095 and 201232310104.

It is not an unprimeable number, because it can be changed into a prime (201232310113) 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 31 ways as a sum of consecutive naturals, for example, 16473488 + ... + 16485698.

It is an arithmetic number, because the mean of its divisors is an integer number (7196043120).

Almost surely, 2^201232310123 is an apocalyptic number.

201232310123 is a deficient number, since it is larger than the sum of its proper divisors (29041069717).

201232310123 is a wasteful number, since it uses less digits than its factorization.

201232310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12867.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201232310123 its reverse (321013232102), we get a palindrome (522245542225).

The spelling of 201232310123 in words is "two hundred one billion, two hundred thirty-two million, three hundred ten thousand, one hundred twenty-three".