321430141 has 2 divisors, whose sum is σ = 321430142. Its totient is φ = 321430140.

The previous prime is 321430099. The next prime is 321430159. The reversal of 321430141 is 141034123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251222500 + 70207641 = 15850^2 + 8379^2 .

It is an emirp because it is prime and its reverse (141034123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321430141 - 2⁷ = 321430013 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321430741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160715070 + 160715071.

It is an arithmetic number, because the mean of its divisors is an integer number (160715071).

Almost surely, 2^321430141 is an apocalyptic number.

It is an amenable number.

321430141 is a deficient number, since it is larger than the sum of its proper divisors (1).

321430141 is an equidigital number, since it uses as much as digits as its factorization.

321430141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 321430141 is about 17928.4729132182. The cubic root of 321430141 is about 685.0078255806.

Adding to 321430141 its reverse (141034123), we get a palindrome (462464264).

The spelling of 321430141 in words is "three hundred twenty-one million, four hundred thirty thousand, one hundred forty-one".