201323231013 has 16 divisors (see below), whose sum is σ = 282776880320. Its totient is φ = 127053432576.

The previous prime is 201323231009. The next prime is 201323231041. The reversal of 201323231013 is 310132323102.

It is not a de Polignac number, because 201323231013 - 2² = 201323231009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201323231413) 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, 1287670 + ... + 1435527.

It is an arithmetic number, because the mean of its divisors is an integer number (17673555020).

Almost surely, 2^201323231013 is an apocalyptic number.

It is an amenable number.

201323231013 is a deficient number, since it is larger than the sum of its proper divisors (81453649307).

201323231013 is a wasteful number, since it uses less digits than its factorization.

201323231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724516.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201323231013 its reverse (310132323102), we get a palindrome (511455554115).

The spelling of 201323231013 in words is "two hundred one billion, three hundred twenty-three million, two hundred thirty-one thousand, thirteen".