316448621 has 2 divisors, whose sum is σ = 316448622. Its totient is φ = 316448620.

The previous prime is 316448599. The next prime is 316448681. The reversal of 316448621 is 126844613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316448521 + 100 = 17789^2 + 10^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316448621 is a prime.

It is a super-3 number, since 3×316448621³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316448681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158224310 + 158224311.

It is an arithmetic number, because the mean of its divisors is an integer number (158224311).

Almost surely, 2^316448621 is an apocalyptic number.

It is an amenable number.

316448621 is a deficient number, since it is larger than the sum of its proper divisors (1).

316448621 is an equidigital number, since it uses as much as digits as its factorization.

316448621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 316448621 is about 17789.0028107255. The cubic root of 316448621 is about 681.4506380276.

The spelling of 316448621 in words is "three hundred sixteen million, four hundred forty-eight thousand, six hundred twenty-one".