320040923 has 2 divisors, whose sum is σ = 320040924. Its totient is φ = 320040922.

The previous prime is 320040911. The next prime is 320040943. The reversal of 320040923 is 329040023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320040923 - 2⁶ = 320040859 is a prime.

It is not a weakly prime, because it can be changed into another prime (320040943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160020461 + 160020462.

It is an arithmetic number, because the mean of its divisors is an integer number (160020462).

Almost surely, 2^320040923 is an apocalyptic number.

320040923 is a deficient number, since it is larger than the sum of its proper divisors (1).

320040923 is an equidigital number, since it uses as much as digits as its factorization.

320040923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 320040923 is about 17889.6876160541. The cubic root of 320040923 is about 684.0195346552.

Adding to 320040923 its reverse (329040023), we get a palindrome (649080946).

The spelling of 320040923 in words is "three hundred twenty million, forty thousand, nine hundred twenty-three".