213131210013 has 32 divisors (see below), whose sum is σ = 326109312000. Its totient is φ = 137430648000.

The previous prime is 213131210011. The next prime is 213131210021. The reversal of 213131210013 is 310012131312.

It is not a de Polignac number, because 213131210013 - 2¹ = 213131210011 is a prime.

It is a super-2 number, since 2×213131210013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131210011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1524163 + ... + 1658111.

It is an arithmetic number, because the mean of its divisors is an integer number (10190916000).

Almost surely, 2^213131210013 is an apocalyptic number.

It is an amenable number.

213131210013 is a deficient number, since it is larger than the sum of its proper divisors (112978101987).

213131210013 is a wasteful number, since it uses less digits than its factorization.

213131210013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135890 (or 135884 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 213131210013 its reverse (310012131312), we get a palindrome (523143341325).

The spelling of 213131210013 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred ten thousand, thirteen".