320354143 has 4 divisors (see below), whose sum is σ = 334282608. Its totient is φ = 306425680.

The previous prime is 320354141. The next prime is 320354147. The reversal of 320354143 is 341453023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341453023 = 101 ⋅3380723.

It is a cyclic number.

It is not a de Polignac number, because 320354143 - 2¹ = 320354141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320354141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6964198 + ... + 6964243.

It is an arithmetic number, because the mean of its divisors is an integer number (83570652).

Almost surely, 2^320354143 is an apocalyptic number.

320354143 is a deficient number, since it is larger than the sum of its proper divisors (13928465).

320354143 is a wasteful number, since it uses less digits than its factorization.

320354143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13928464.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 320354143 is about 17898.4396805979. The cubic root of 320354143 is about 684.2426089843.

The spelling of 320354143 in words is "three hundred twenty million, three hundred fifty-four thousand, one hundred forty-three".