213110322131 has 16 divisors (see below), whose sum is σ = 248849915904. Its totient is φ = 178698083424.

The previous prime is 213110322127. The next prime is 213110322133. The reversal of 213110322131 is 131223011312.

It is a happy number.

It is not a de Polignac number, because 213110322131 - 2² = 213110322127 is a prime.

It is a super-2 number, since 2×213110322131² (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 (213110322133) 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 15 ways as a sum of consecutive naturals, for example, 581726 + ... + 874428.

It is an arithmetic number, because the mean of its divisors is an integer number (15553119744).

Almost surely, 2^213110322131 is an apocalyptic number.

213110322131 is a deficient number, since it is larger than the sum of its proper divisors (35739593773).

213110322131 is a wasteful number, since it uses less digits than its factorization.

213110322131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294970.

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

Adding to 213110322131 its reverse (131223011312), we get a palindrome (344333333443).

The spelling of 213110322131 in words is "two hundred thirteen billion, one hundred ten million, three hundred twenty-two thousand, one hundred thirty-one".