320743936231 has 4 divisors (see below), whose sum is σ = 320820000192. Its totient is φ = 320667872272.

The previous prime is 320743936229. The next prime is 320743936319. The reversal of 320743936231 is 132639347023.

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

It is a cyclic number.

It is not a de Polignac number, because 320743936231 - 2¹ = 320743936229 is a prime.

It is a super-2 number, since 2×320743936231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320743936211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38025655 + ... + 38034088.

It is an arithmetic number, because the mean of its divisors is an integer number (80205000048).

Almost surely, 2^320743936231 is an apocalyptic number.

320743936231 is a deficient number, since it is larger than the sum of its proper divisors (76063961).

320743936231 is an equidigital number, since it uses as much as digits as its factorization.

320743936231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76063960.

The product of its (nonzero) digits is 489888, while the sum is 43.

The spelling of 320743936231 in words is "three hundred twenty billion, seven hundred forty-three million, nine hundred thirty-six thousand, two hundred thirty-one".