213201312131 has 4 divisors (see below), whose sum is σ = 213306391200. Its totient is φ = 213096233064.

The previous prime is 213201312127. The next prime is 213201312133. The reversal of 213201312131 is 131213102312.

It is a happy number.

213201312131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213201312131 - 2² = 213201312127 is a prime.

It is a super-2 number, since 2×213201312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213201312133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52536491 + ... + 52540548.

It is an arithmetic number, because the mean of its divisors is an integer number (53326597800).

Almost surely, 2^213201312131 is an apocalyptic number.

213201312131 is a deficient number, since it is larger than the sum of its proper divisors (105079069).

213201312131 is a wasteful number, since it uses less digits than its factorization.

213201312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105079068.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213201312131 its reverse (131213102312), we get a palindrome (344414414443).

The spelling of 213201312131 in words is "two hundred thirteen billion, two hundred one million, three hundred twelve thousand, one hundred thirty-one".