321321461 has 2 divisors, whose sum is σ = 321321462. Its totient is φ = 321321460.

The previous prime is 321321449. The next prime is 321321503. The reversal of 321321461 is 164123123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314530225 + 6791236 = 17735^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 321321461 - 2⁶ = 321321397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321321761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160660730 + 160660731.

It is an arithmetic number, because the mean of its divisors is an integer number (160660731).

Almost surely, 2^321321461 is an apocalyptic number.

It is an amenable number.

321321461 is a deficient number, since it is larger than the sum of its proper divisors (1).

321321461 is an equidigital number, since it uses as much as digits as its factorization.

321321461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 321321461 is about 17925.4417239855. The cubic root of 321321461 is about 684.9306133209.

Adding to 321321461 its reverse (164123123), we get a palindrome (485444584).

The spelling of 321321461 in words is "three hundred twenty-one million, three hundred twenty-one thousand, four hundred sixty-one".