320147823 has 16 divisors (see below), whose sum is σ = 431169536. Its totient is φ = 211286880.

The previous prime is 320147813. The next prime is 320147827. The reversal of 320147823 is 328741023.

It is not a de Polignac number, because 320147823 - 2⁶ = 320147759 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320147827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313053 + ... + 314073.

It is an arithmetic number, because the mean of its divisors is an integer number (26948096).

Almost surely, 2^320147823 is an apocalyptic number.

320147823 is a deficient number, since it is larger than the sum of its proper divisors (111021713).

320147823 is a wasteful number, since it uses less digits than its factorization.

320147823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 320147823 is about 17892.6751214009. The cubic root of 320147823 is about 684.0956848630.

Adding to 320147823 its reverse (328741023), we get a palindrome (648888846).

The spelling of 320147823 in words is "three hundred twenty million, one hundred forty-seven thousand, eight hundred twenty-three".