320161723 has 8 divisors (see below), whose sum is σ = 385157120. Its totient is φ = 259980840.

The previous prime is 320161693. The next prime is 320161757. The reversal of 320161723 is 327161023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320161723 - 2⁵ = 320161691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320161423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203483 + ... + 1203748.

It is an arithmetic number, because the mean of its divisors is an integer number (48144640).

Almost surely, 2^320161723 is an apocalyptic number.

320161723 is a deficient number, since it is larger than the sum of its proper divisors (64995397).

320161723 is a wasteful number, since it uses less digits than its factorization.

320161723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407257.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 320161723 is about 17893.0635442900. The cubic root of 320161723 is about 684.1055852817.

The spelling of 320161723 in words is "three hundred twenty million, one hundred sixty-one thousand, seven hundred twenty-three".