171324913 has 2 divisors, whose sum is σ = 171324914. Its totient is φ = 171324912.

The previous prime is 171324893. The next prime is 171324949. The reversal of 171324913 is 319423171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153066384 + 18258529 = 12372^2 + 4273^2 .

It is a cyclic number.

It is not a de Polignac number, because 171324913 - 2²⁵ = 137770481 is a prime.

It is equal to p_9573124 and since 171324913 and 9573124 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (171324983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85662456 + 85662457.

It is an arithmetic number, because the mean of its divisors is an integer number (85662457).

Almost surely, 2^171324913 is an apocalyptic number.

It is an amenable number.

171324913 is a deficient number, since it is larger than the sum of its proper divisors (1).

171324913 is an equidigital number, since it uses as much as digits as its factorization.

171324913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 171324913 is about 13089.1142939467. The cubic root of 171324913 is about 555.4012335468.

The spelling of 171324913 in words is "one hundred seventy-one million, three hundred twenty-four thousand, nine hundred thirteen".