172111343 has 2 divisors, whose sum is σ = 172111344. Its totient is φ = 172111342.

The previous prime is 172111339. The next prime is 172111361. The reversal of 172111343 is 343111271.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (343111271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172111343 - 2² = 172111339 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172111333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86055671 + 86055672.

It is an arithmetic number, because the mean of its divisors is an integer number (86055672).

Almost surely, 2^172111343 is an apocalyptic number.

172111343 is a deficient number, since it is larger than the sum of its proper divisors (1).

172111343 is an equidigital number, since it uses as much as digits as its factorization.

172111343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 172111343 is about 13119.1212739268. The cubic root of 172111343 is about 556.2497530109.

The spelling of 172111343 in words is "one hundred seventy-two million, one hundred eleven thousand, three hundred forty-three".