320472923 has 4 divisors (see below), whose sum is σ = 320563848. Its totient is φ = 320382000.

The previous prime is 320472917. The next prime is 320472941. The reversal of 320472923 is 329274023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320472923 - 2⁴ = 320472907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320472923.

It is not an unprimeable number, because it can be changed into a prime (320472973) 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, 39953 + ... + 47298.

It is an arithmetic number, because the mean of its divisors is an integer number (80140962).

Almost surely, 2^320472923 is an apocalyptic number.

320472923 is a deficient number, since it is larger than the sum of its proper divisors (90925).

320472923 is an equidigital number, since it uses as much as digits as its factorization.

320472923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90924.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 320472923 is about 17901.7575394149. The cubic root of 320472923 is about 684.3271657121.

The spelling of 320472923 in words is "three hundred twenty million, four hundred seventy-two thousand, nine hundred twenty-three".