212103312311 has 8 divisors (see below), whose sum is σ = 232722921744. Its totient is φ = 191706617920.

The previous prime is 212103312307. The next prime is 212103312331. The reversal of 212103312311 is 113213301212.

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 212103312311 - 2² = 212103312307 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 (212103312331) 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, 55726766 + ... + 55730571.

It is an arithmetic number, because the mean of its divisors is an integer number (29090365218).

Almost surely, 2^212103312311 is an apocalyptic number.

212103312311 is a deficient number, since it is larger than the sum of its proper divisors (20619609433).

212103312311 is a wasteful number, since it uses less digits than its factorization.

212103312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111457521.

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

Adding to 212103312311 its reverse (113213301212), we get a palindrome (325316613523).

The spelling of 212103312311 in words is "two hundred twelve billion, one hundred three million, three hundred twelve thousand, three hundred eleven".