213113211013 has 6 divisors (see below), whose sum is σ = 213219911814. Its totient is φ = 213006563496.

The previous prime is 213113211011. The next prime is 213113211019. The reversal of 213113211013 is 310112311312.

It can be written as a sum of positive squares in only one way, i.e., 208097455329 + 5015755684 = 456177^2 + 70822^2 .

It is not a de Polignac number, because 213113211013 - 2¹ = 213113211011 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 (213113211011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4314331 + ... + 4363447.

It is an arithmetic number, because the mean of its divisors is an integer number (35536651969).

Almost surely, 2^213113211013 is an apocalyptic number.

It is an amenable number.

213113211013 is a deficient number, since it is larger than the sum of its proper divisors (106700801).

213113211013 is an frugal number, since it uses more digits than its factorization.

213113211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53283 (or 51200 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213113211013 its reverse (310112311312), we get a palindrome (523225522325).

The spelling of 213113211013 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred eleven thousand, thirteen".