212131312103 has 8 divisors (see below), whose sum is σ = 214711693056. Its totient is φ = 209551516600.

The previous prime is 212131312097. The next prime is 212131312199. The reversal of 212131312103 is 301213131212.

It is a happy number.

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 212131312103 - 2²⁸ = 211862876647 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 (212131312703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606098 + ... + 889728.

It is an arithmetic number, because the mean of its divisors is an integer number (26838961632).

Almost surely, 2^212131312103 is an apocalyptic number.

212131312103 is a deficient number, since it is larger than the sum of its proper divisors (2580380953).

212131312103 is an equidigital number, since it uses as much as digits as its factorization.

212131312103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292725.

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

Adding to 212131312103 its reverse (301213131212), we get a palindrome (513344443315).

The spelling of 212131312103 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred twelve thousand, one hundred three".