320451623 has 2 divisors, whose sum is σ = 320451624. Its totient is φ = 320451622.

The previous prime is 320451589. The next prime is 320451661. The reversal of 320451623 is 326154023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320451623 - 2⁶ = 320451559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320451592 and 320451601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320451023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160225811 + 160225812.

It is an arithmetic number, because the mean of its divisors is an integer number (160225812).

Almost surely, 2^320451623 is an apocalyptic number.

320451623 is a deficient number, since it is larger than the sum of its proper divisors (1).

320451623 is an equidigital number, since it uses as much as digits as its factorization.

320451623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 320451623 is about 17901.1626158750. The cubic root of 320451623 is about 684.3120042736.

The spelling of 320451623 in words is "three hundred twenty million, four hundred fifty-one thousand, six hundred twenty-three".