201213232312013 has 4 divisors (see below), whose sum is σ = 201214011473340. Its totient is φ = 201212453150688.

The previous prime is 201213232312009. The next prime is 201213232312093. The reversal of 201213232312013 is 310213232312102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 109925201568484 + 91288030743529 = 10484522^2 + 9554477^2 .

It is a cyclic number.

It is not a de Polignac number, because 201213232312013 - 2² = 201213232312009 is a prime.

It is a super-2 number, since 2×201213232312013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201213232312093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389193170 + ... + 389709827.

It is an arithmetic number, because the mean of its divisors is an integer number (50303502868335).

Almost surely, 2^{201213232312013} is an apocalyptic number.

It is an amenable number.

201213232312013 is a deficient number, since it is larger than the sum of its proper divisors (779161327).

201213232312013 is an equidigital number, since it uses as much as digits as its factorization.

201213232312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779161326.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 201213232312013 its reverse (310213232312102), we get a palindrome (511426464624115).

The spelling of 201213232312013 in words is "two hundred one trillion, two hundred thirteen billion, two hundred thirty-two million, three hundred twelve thousand, thirteen".