320429983 has 2 divisors, whose sum is σ = 320429984. Its totient is φ = 320429982.

The previous prime is 320429969. The next prime is 320430001. The reversal of 320429983 is 389924023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320429983 - 2¹⁷ = 320298911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320429183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160214991 + 160214992.

It is an arithmetic number, because the mean of its divisors is an integer number (160214992).

Almost surely, 2^320429983 is an apocalyptic number.

320429983 is a deficient number, since it is larger than the sum of its proper divisors (1).

320429983 is an equidigital number, since it uses as much as digits as its factorization.

320429983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 320429983 is about 17900.5581756547. The cubic root of 320429983 is about 684.2966001334.

It can be divided in two parts, 32042 and 9983, that added together give a square (42025 = 205²).

The spelling of 320429983 in words is "three hundred twenty million, four hundred twenty-nine thousand, nine hundred eighty-three".