321250481 has 2 divisors, whose sum is σ = 321250482. Its totient is φ = 321250480.

The previous prime is 321250469. The next prime is 321250529. The reversal of 321250481 is 184052123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175324081 + 145926400 = 13241^2 + 12080^2 .

It is an emirp because it is prime and its reverse (184052123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321250481 - 2¹⁰ = 321249457 is a prime.

It is a super-2 number, since 2×321250481² = 206403743085462722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321250481.

It is not a weakly prime, because it can be changed into another prime (321250441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160625240 + 160625241.

It is an arithmetic number, because the mean of its divisors is an integer number (160625241).

Almost surely, 2^321250481 is an apocalyptic number.

It is an amenable number.

321250481 is a deficient number, since it is larger than the sum of its proper divisors (1).

321250481 is an equidigital number, since it uses as much as digits as its factorization.

321250481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 321250481 is about 17923.4617471068. The cubic root of 321250481 is about 684.8801758193.

The spelling of 321250481 in words is "three hundred twenty-one million, two hundred fifty thousand, four hundred eighty-one".