211020312320 has 72 divisors (see below), whose sum is σ = 507667544160. Its totient is φ = 84039413760.

The previous prime is 211020312311. The next prime is 211020312329. The reversal of 211020312320 is 23213020112.

It is an interprime number because it is at equal distance from previous prime (211020312311) and next prime (211020312329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020312329) 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, 66836 + ... + 653075.

Almost surely, 2^211020312320 is an apocalyptic number.

211020312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020312320 is an abundant number, since it is smaller than the sum of its proper divisors (296647231840).

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

211020312320 is an equidigital number, since it uses as much as digits as its factorization.

211020312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720161 (or 720147 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211020312320 its reverse (23213020112), we get a palindrome (234233332432).

The spelling of 211020312320 in words is "two hundred eleven billion, twenty million, three hundred twelve thousand, three hundred twenty".