320223333431 has 4 divisors (see below), whose sum is σ = 320224825872. Its totient is φ = 320221840992.

The previous prime is 320223333403. The next prime is 320223333457. The reversal of 320223333431 is 134333322023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320223333431 is a prime.

It is a super-2 number, since 2×320223333431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320223333394 and 320223333403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320223333401) 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, 356546 + ... + 876111.

It is an arithmetic number, because the mean of its divisors is an integer number (80056206468).

Almost surely, 2^320223333431 is an apocalyptic number.

320223333431 is a deficient number, since it is larger than the sum of its proper divisors (1492441).

320223333431 is a wasteful number, since it uses less digits than its factorization.

320223333431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492440.

The product of its (nonzero) digits is 23328, while the sum is 29.

Adding to 320223333431 its reverse (134333322023), we get a palindrome (454556655454).

The spelling of 320223333431 in words is "three hundred twenty billion, two hundred twenty-three million, three hundred thirty-three thousand, four hundred thirty-one".