211322732389 has 4 divisors (see below), whose sum is σ = 211329603756. Its totient is φ = 211315861024.

The previous prime is 211322732377. The next prime is 211322732431. The reversal of 211322732389 is 983237223112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157525641025 + 53797091364 = 396895^2 + 231942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211322732389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211322732329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389344 + ... + 3451129.

It is an arithmetic number, because the mean of its divisors is an integer number (52832400939).

Almost surely, 2^211322732389 is an apocalyptic number.

It is an amenable number.

211322732389 is a deficient number, since it is larger than the sum of its proper divisors (6871367).

211322732389 is an equidigital number, since it uses as much as digits as its factorization.

211322732389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871366.

The product of its digits is 217728, while the sum is 43.

The spelling of 211322732389 in words is "two hundred eleven billion, three hundred twenty-two million, seven hundred thirty-two thousand, three hundred eighty-nine".