201230312023123 has 4 divisors (see below), whose sum is σ = 202283873866368. Its totient is φ = 200176750179880.

The previous prime is 201230312023109. The next prime is 201230312023157. The reversal of 201230312023123 is 321320213032102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201230312023123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201230312020123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526780921336 + ... + 526780921717.

It is an arithmetic number, because the mean of its divisors is an integer number (50570968466592).

Almost surely, 2^{201230312023123} is an apocalyptic number.

201230312023123 is a deficient number, since it is larger than the sum of its proper divisors (1053561843245).

201230312023123 is a wasteful number, since it uses less digits than its factorization.

201230312023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053561843244.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 201230312023123 its reverse (321320213032102), we get a palindrome (522550525055225).

The spelling of 201230312023123 in words is "two hundred one trillion, two hundred thirty billion, three hundred twelve million, twenty-three thousand, one hundred twenty-three".