212131323103 has 16 divisors (see below), whose sum is σ = 242764487680. Its totient is φ = 181580494176.

The previous prime is 212131323097. The next prime is 212131323109. The reversal of 212131323103 is 301323131212.

It is an interprime number because it is at equal distance from previous prime (212131323097) and next prime (212131323109).

It is a cyclic number.

It is not a de Polignac number, because 212131323103 - 2¹³ = 212131314911 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 (212131323109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21911818 + ... + 21921496.

It is an arithmetic number, because the mean of its divisors is an integer number (15172780480).

Almost surely, 2^212131323103 is an apocalyptic number.

212131323103 is a deficient number, since it is larger than the sum of its proper divisors (30633164577).

212131323103 is a wasteful number, since it uses less digits than its factorization.

212131323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212131323103 its reverse (301323131212), we get a palindrome (513454454315).

The spelling of 212131323103 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred three".