172222313 has 2 divisors, whose sum is σ = 172222314. Its totient is φ = 172222312.

The previous prime is 172222277. The next prime is 172222319. The reversal of 172222313 is 313222271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171426649 + 795664 = 13093^2 + 892^2 .

It is an emirp because it is prime and its reverse (313222271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172222313 - 2²² = 168028009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172222319) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86111156 + 86111157.

It is an arithmetic number, because the mean of its divisors is an integer number (86111157).

Almost surely, 2^172222313 is an apocalyptic number.

It is an amenable number.

172222313 is a deficient number, since it is larger than the sum of its proper divisors (1).

172222313 is an equidigital number, since it uses as much as digits as its factorization.

172222313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 23.

The square root of 172222313 is about 13123.3499153227. The cubic root of 172222313 is about 556.3692759748.

Adding to 172222313 its reverse (313222271), we get a palindrome (485444584).

The spelling of 172222313 in words is "one hundred seventy-two million, two hundred twenty-two thousand, three hundred thirteen".