320243232431 has 8 divisors (see below), whose sum is σ = 323562339744. Its totient is φ = 316924485120.

The previous prime is 320243232409. The next prime is 320243232457. The reversal of 320243232431 is 134232342023.

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

It is a cyclic number.

It is not a de Polignac number, because 320243232431 - 2³⁴ = 303063363247 is a prime.

It is a super-3 number, since 3×320243232431³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320243232394 and 320243232403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320243232401) 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, 1932491 + ... + 2091651.

It is an arithmetic number, because the mean of its divisors is an integer number (40445292468).

Almost surely, 2^320243232431 is an apocalyptic number.

320243232431 is a deficient number, since it is larger than the sum of its proper divisors (3319107313).

320243232431 is a wasteful number, since it uses less digits than its factorization.

320243232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180001.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 320243232431 its reverse (134232342023), we get a palindrome (454475574454).

The spelling of 320243232431 in words is "three hundred twenty billion, two hundred forty-three million, two hundred thirty-two thousand, four hundred thirty-one".