213131231113 has 8 divisors (see below), whose sum is σ = 221469292800. Its totient is φ = 204859083408.

The previous prime is 213131231111. The next prime is 213131231167. The reversal of 213131231113 is 311132131312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213131231113 - 2¹ = 213131231111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213131231111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16471903 + ... + 16484836.

It is an arithmetic number, because the mean of its divisors is an integer number (27683661600).

Almost surely, 2^213131231113 is an apocalyptic number.

It is an amenable number.

213131231113 is a deficient number, since it is larger than the sum of its proper divisors (8338061687).

213131231113 is a wasteful number, since it uses less digits than its factorization.

213131231113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32956991.

The product of its digits is 324, while the sum is 22.

Adding to 213131231113 its reverse (311132131312), we get a palindrome (524263362425).

The spelling of 213131231113 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred thirteen".