316446270221 has 2 divisors, whose sum is σ = 316446270222. Its totient is φ = 316446270220.

The previous prime is 316446270197. The next prime is 316446270227. The reversal of 316446270221 is 122072644613.

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., 297449161321 + 18997108900 = 545389^2 + 137830^2 .

It is a cyclic number.

It is not a de Polignac number, because 316446270221 - 2³⁴ = 299266401037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316446270227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158223135110 + 158223135111.

It is an arithmetic number, because the mean of its divisors is an integer number (158223135111).

Almost surely, 2^316446270221 is an apocalyptic number.

It is an amenable number.

316446270221 is a deficient number, since it is larger than the sum of its proper divisors (1).

316446270221 is an equidigital number, since it uses as much as digits as its factorization.

316446270221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 316446270221 in words is "three hundred sixteen billion, four hundred forty-six million, two hundred seventy thousand, two hundred twenty-one".