321723461 has 2 divisors, whose sum is σ = 321723462. Its totient is φ = 321723460.

The previous prime is 321723449. The next prime is 321723491. The reversal of 321723461 is 164327123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209236225 + 112487236 = 14465^2 + 10606^2 .

It is a cyclic number.

It is not a de Polignac number, because 321723461 - 2¹⁴ = 321707077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321723491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160861730 + 160861731.

It is an arithmetic number, because the mean of its divisors is an integer number (160861731).

Almost surely, 2^321723461 is an apocalyptic number.

It is an amenable number.

321723461 is a deficient number, since it is larger than the sum of its proper divisors (1).

321723461 is an equidigital number, since it uses as much as digits as its factorization.

321723461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 321723461 is about 17936.6513318401. The cubic root of 321723461 is about 685.2161294311.

The spelling of 321723461 in words is "three hundred twenty-one million, seven hundred twenty-three thousand, four hundred sixty-one".