316734221 has 2 divisors, whose sum is σ = 316734222. Its totient is φ = 316734220.

The previous prime is 316734211. The next prime is 316734241. The reversal of 316734221 is 122437613.

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., 299809225 + 16924996 = 17315^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 316734221 - 2¹⁸ = 316472077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316734211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158367110 + 158367111.

It is an arithmetic number, because the mean of its divisors is an integer number (158367111).

Almost surely, 2^316734221 is an apocalyptic number.

It is an amenable number.

316734221 is a deficient number, since it is larger than the sum of its proper divisors (1).

316734221 is an equidigital number, since it uses as much as digits as its factorization.

316734221 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 316734221 is about 17797.0284317355. The cubic root of 316734221 is about 681.6555831264.

The spelling of 316734221 in words is "three hundred sixteen million, seven hundred thirty-four thousand, two hundred twenty-one".