172341397 has 2 divisors, whose sum is σ = 172341398. Its totient is φ = 172341396.

The previous prime is 172341383. The next prime is 172341509. The reversal of 172341397 is 793143271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105657841 + 66683556 = 10279^2 + 8166^2 .

It is a cyclic number.

It is not a de Polignac number, because 172341397 - 2¹⁹ = 171817109 is a prime.

It is a super-3 number, since 3×172341397³ (a number of 26 digits) contains 333 as substring.

It is equal to p_9626716 and since 172341397 and 9626716 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172341347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86170698 + 86170699.

It is an arithmetic number, because the mean of its divisors is an integer number (86170699).

Almost surely, 2^172341397 is an apocalyptic number.

It is an amenable number.

172341397 is a deficient number, since it is larger than the sum of its proper divisors (1).

172341397 is an equidigital number, since it uses as much as digits as its factorization.

172341397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 172341397 is about 13127.8862350342. The cubic root of 172341397 is about 556.4974812247.

The spelling of 172341397 in words is "one hundred seventy-two million, three hundred forty-one thousand, three hundred ninety-seven".