172034111 has 2 divisors, whose sum is σ = 172034112. Its totient is φ = 172034110.

The previous prime is 172034087. The next prime is 172034129. The reversal of 172034111 is 111430271.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172034111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172034011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86017055 + 86017056.

It is an arithmetic number, because the mean of its divisors is an integer number (86017056).

Almost surely, 2^172034111 is an apocalyptic number.

172034111 is a deficient number, since it is larger than the sum of its proper divisors (1).

172034111 is an equidigital number, since it uses as much as digits as its factorization.

172034111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 172034111 is about 13116.1774538163. The cubic root of 172034111 is about 556.1665380647.

Adding to 172034111 its reverse (111430271), we get a palindrome (283464382).

The spelling of 172034111 in words is "one hundred seventy-two million, thirty-four thousand, one hundred eleven".