320968143 has 32 divisors (see below), whose sum is σ = 520862400. Its totient is φ = 194439168.

The previous prime is 320968133. The next prime is 320968163. The reversal of 320968143 is 341869023.

It is not a de Polignac number, because 320968143 - 2⁴ = 320968127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320968098 and 320968107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320968103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255 + ... + 25367.

It is an arithmetic number, because the mean of its divisors is an integer number (16276950).

Almost surely, 2^320968143 is an apocalyptic number.

320968143 is a deficient number, since it is larger than the sum of its proper divisors (199894257).

320968143 is a wasteful number, since it uses less digits than its factorization.

320968143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24168 (or 24162 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 320968143 is about 17915.5838029354. The cubic root of 320968143 is about 684.6794763789.

The spelling of 320968143 in words is "three hundred twenty million, nine hundred sixty-eight thousand, one hundred forty-three".