320134143 has 16 divisors (see below), whose sum is σ = 488316416. Its totient is φ = 182748960.

The previous prime is 320134121. The next prime is 320134153. The reversal of 320134143 is 341431023.

It is not a de Polignac number, because 320134143 - 2¹⁰ = 320133119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320134153) 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 15 ways as a sum of consecutive naturals, for example, 15153 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (30519776).

Almost surely, 2^320134143 is an apocalyptic number.

320134143 is a deficient number, since it is larger than the sum of its proper divisors (168182273).

320134143 is a wasteful number, since it uses less digits than its factorization.

320134143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15414.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320134143 is about 17892.2928379792. The cubic root of 320134143 is about 684.0859408619.

Adding to 320134143 its reverse (341431023), we get a palindrome (661565166).

The spelling of 320134143 in words is "three hundred twenty million, one hundred thirty-four thousand, one hundred forty-three".