213111312320 has 28 divisors (see below), whose sum is σ = 507471313224. Its totient is φ = 85244524800.

The previous prime is 213111312317. The next prime is 213111312361. The reversal of 213111312320 is 23213111312.

It is a happy number.

213111312320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213111312292 and 213111312301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332986106 + ... + 332986745.

Almost surely, 2^213111312320 is an apocalyptic number.

213111312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213111312320 is an abundant number, since it is smaller than the sum of its proper divisors (294360000904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213111312320 is an equidigital number, since it uses as much as digits as its factorization.

213111312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665972868 (or 665972858 counting only the distinct ones).

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

Adding to 213111312320 its reverse (23213111312), we get a palindrome (236324423632).

The spelling of 213111312320 in words is "two hundred thirteen billion, one hundred eleven million, three hundred twelve thousand, three hundred twenty".