320622543 has 20 divisors (see below), whose sum is σ = 482417320. Its totient is φ = 212203152.

The previous prime is 320622481. The next prime is 320622551. The reversal of 320622543 is 345226023.

320622543 is a `hidden beast` number, since 32 + 0 + 622 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 320622543 - 2⁸ = 320622287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320622593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2980 + ... + 25497.

It is an arithmetic number, because the mean of its divisors is an integer number (24120866).

Almost surely, 2^320622543 is an apocalyptic number.

320622543 is a deficient number, since it is larger than the sum of its proper divisors (161794777).

320622543 is a wasteful number, since it uses less digits than its factorization.

320622543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28628 (or 28619 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 320622543 is about 17905.9359710684. The cubic root of 320622543 is about 684.4336469914.

Adding to 320622543 its reverse (345226023), we get a palindrome (665848566).

The spelling of 320622543 in words is "three hundred twenty million, six hundred twenty-two thousand, five hundred forty-three".