320100211243 has 8 divisors (see below), whose sum is σ = 324405192240. Its totient is φ = 315810971520.

The previous prime is 320100211159. The next prime is 320100211289. The reversal of 320100211243 is 342112001023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320100211243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320100211243.

It is not an unprimeable number, because it can be changed into a prime (320100217243) 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, 3894373 + ... + 3975718.

It is an arithmetic number, because the mean of its divisors is an integer number (40550649030).

Almost surely, 2^320100211243 is an apocalyptic number.

320100211243 is a deficient number, since it is larger than the sum of its proper divisors (4304980997).

320100211243 is an equidigital number, since it uses as much as digits as its factorization.

320100211243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7870637.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 320100211243 its reverse (342112001023), we get a palindrome (662212212266).

The spelling of 320100211243 in words is "three hundred twenty billion, one hundred million, two hundred eleven thousand, two hundred forty-three".