201210320423 has 16 divisors (see below), whose sum is σ = 243886342656. Its totient is φ = 162263075040.

The previous prime is 201210320401. The next prime is 201210320459. The reversal of 201210320423 is 324023012102.

It is a cyclic number.

It is not a de Polignac number, because 201210320423 - 2¹⁰ = 201210319399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201210320395 and 201210320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210320483) 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, 10234061 + ... + 10253702.

It is an arithmetic number, because the mean of its divisors is an integer number (15242896416).

Almost surely, 2^201210320423 is an apocalyptic number.

201210320423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201210320423 is a deficient number, since it is larger than the sum of its proper divisors (42676022233).

201210320423 is a wasteful number, since it uses less digits than its factorization.

201210320423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20487854.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 201210320423 its reverse (324023012102), we get a palindrome (525233332525).

The spelling of 201210320423 in words is "two hundred one billion, two hundred ten million, three hundred twenty thousand, four hundred twenty-three".