212320311 has 8 divisors (see below), whose sum is σ = 323535744. Its totient is φ = 121325880.

The previous prime is 212320301. The next prime is 212320331. The reversal of 212320311 is 113023212.

212320311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212320311 - 2⁶ = 212320247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212320301) 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, 5055225 + ... + 5055266.

It is an arithmetic number, because the mean of its divisors is an integer number (40441968).

Almost surely, 2^212320311 is an apocalyptic number.

212320311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212320311 is a deficient number, since it is larger than the sum of its proper divisors (111215433).

212320311 is a wasteful number, since it uses less digits than its factorization.

212320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110501.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212320311 is about 14571.2151517984. The cubic root of 212320311 is about 596.5733479030.

Adding to 212320311 its reverse (113023212), we get a palindrome (325343523).

The spelling of 212320311 in words is "two hundred twelve million, three hundred twenty thousand, three hundred eleven".