316142173 has 2 divisors, whose sum is σ = 316142174. Its totient is φ = 316142172.

The previous prime is 316142147. The next prime is 316142179. The reversal of 316142173 is 371241613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314636644 + 1505529 = 17738^2 + 1227^2 .

It is a cyclic number.

It is not a de Polignac number, because 316142173 - 2²¹ = 314045021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316142179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158071086 + 158071087.

It is an arithmetic number, because the mean of its divisors is an integer number (158071087).

Almost surely, 2^316142173 is an apocalyptic number.

It is an amenable number.

316142173 is a deficient number, since it is larger than the sum of its proper divisors (1).

316142173 is an equidigital number, since it uses as much as digits as its factorization.

316142173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 316142173 is about 17780.3873129918. The cubic root of 316142173 is about 681.2305953231.

Adding to 316142173 its reverse (371241613), we get a palindrome (687383786).

The spelling of 316142173 in words is "three hundred sixteen million, one hundred forty-two thousand, one hundred seventy-three".