201423321123 has 8 divisors (see below), whose sum is σ = 280241142528. Its totient is φ = 128443856904.

The previous prime is 201423321041. The next prime is 201423321137. The reversal of 201423321123 is 321123324102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201423321123 - 2⁹ = 201423320611 is a prime.

It is a super-2 number, since 2×201423321123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201423321093 and 201423321102.

It is not an unprimeable number, because it can be changed into a prime (201423321163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459589215 + ... + 1459589352.

It is an arithmetic number, because the mean of its divisors is an integer number (35030142816).

Almost surely, 2^201423321123 is an apocalyptic number.

201423321123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201423321123 is a deficient number, since it is larger than the sum of its proper divisors (78817821405).

201423321123 is a wasteful number, since it uses less digits than its factorization.

201423321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919178593.

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

Adding to 201423321123 its reverse (321123324102), we get a palindrome (522546645225).

The spelling of 201423321123 in words is "two hundred one billion, four hundred twenty-three million, three hundred twenty-one thousand, one hundred twenty-three".