211011313320 has 48 divisors (see below), whose sum is σ = 685786769460. Its totient is φ = 56269683456.

The previous prime is 211011313319. The next prime is 211011313327. The reversal of 211011313320 is 23313110112.

211011313320 is a `hidden beast` number, since 21 + 1 + 0 + 11 + 313 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 206346696516 + 4664616804 = 454254^2 + 68298^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211011313293 and 211011313302.

It is not an unprimeable number, because it can be changed into a prime (211011313327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293070909 + ... + 293071628.

Almost surely, 2^211011313320 is an apocalyptic number.

211011313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211011313320 is an abundant number, since it is smaller than the sum of its proper divisors (474775456140).

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

211011313320 is a wasteful number, since it uses less digits than its factorization.

211011313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586142554 (or 586142547 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 211011313320 its reverse (23313110112), we get a palindrome (234324423432).

The spelling of 211011313320 in words is "two hundred eleven billion, eleven million, three hundred thirteen thousand, three hundred twenty".