211331313020 has 12 divisors (see below), whose sum is σ = 443795757384. Its totient is φ = 84532525200.

The previous prime is 211331313007. The next prime is 211331313071. The reversal of 211331313020 is 20313133112.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10566565651 = 211331313020 / (2 + 1 + 1 + 3 + 3 + 1 + 3 + 1 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 211331312983 and 211331313001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5283282806 + ... + 5283282845.

It is an arithmetic number, because the mean of its divisors is an integer number (36982979782).

Almost surely, 2^211331313020 is an apocalyptic number.

211331313020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211331313020 is an abundant number, since it is smaller than the sum of its proper divisors (232464444364).

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

211331313020 is a wasteful number, since it uses less digits than its factorization.

211331313020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10566565660 (or 10566565658 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 211331313020 its reverse (20313133112), we get a palindrome (231644446132).

The spelling of 211331313020 in words is "two hundred eleven billion, three hundred thirty-one million, three hundred thirteen thousand, twenty".