320221473293 has 2 divisors, whose sum is σ = 320221473294. Its totient is φ = 320221473292.

The previous prime is 320221473251. The next prime is 320221473311. The reversal of 320221473293 is 392374122023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283260257284 + 36961216009 = 532222^2 + 192253^2 .

It is a cyclic number.

It is not a de Polignac number, because 320221473293 - 2¹⁴ = 320221456909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320221473893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160110736646 + 160110736647.

It is an arithmetic number, because the mean of its divisors is an integer number (160110736647).

Almost surely, 2^320221473293 is an apocalyptic number.

It is an amenable number.

320221473293 is a deficient number, since it is larger than the sum of its proper divisors (1).

320221473293 is an equidigital number, since it uses as much as digits as its factorization.

320221473293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 320221473293 in words is "three hundred twenty billion, two hundred twenty-one million, four hundred seventy-three thousand, two hundred ninety-three".