321201983 has 2 divisors, whose sum is σ = 321201984. Its totient is φ = 321201982.

The previous prime is 321201977. The next prime is 321201989. The reversal of 321201983 is 389102123.

It is a balanced prime because it is at equal distance from previous prime (321201977) and next prime (321201989).

It is an emirp because it is prime and its reverse (389102123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321201983 - 2⁶ = 321201919 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321201989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600991 + 160600992.

It is an arithmetic number, because the mean of its divisors is an integer number (160600992).

Almost surely, 2^321201983 is an apocalyptic number.

321201983 is a deficient number, since it is larger than the sum of its proper divisors (1).

321201983 is an equidigital number, since it uses as much as digits as its factorization.

321201983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 321201983 is about 17922.1087765921. The cubic root of 321201983 is about 684.8457094736.

The spelling of 321201983 in words is "three hundred twenty-one million, two hundred one thousand, nine hundred eighty-three".