212311400311 has 4 divisors (see below), whose sum is σ = 212326844800. Its totient is φ = 212295955824.

The previous prime is 212311400309. The next prime is 212311400333. The reversal of 212311400311 is 113004113212.

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 212311400311 - 2¹ = 212311400309 is a prime.

It is a super-2 number, since 2×212311400311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311400111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7701606 + ... + 7729123.

It is an arithmetic number, because the mean of its divisors is an integer number (53081711200).

Almost surely, 2^212311400311 is an apocalyptic number.

212311400311 is a deficient number, since it is larger than the sum of its proper divisors (15444489).

212311400311 is a wasteful number, since it uses less digits than its factorization.

212311400311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15444488.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212311400311 its reverse (113004113212), we get a palindrome (325315513523).

The spelling of 212311400311 in words is "two hundred twelve billion, three hundred eleven million, four hundred thousand, three hundred eleven".