172371383 has 2 divisors, whose sum is σ = 172371384. Its totient is φ = 172371382.

The previous prime is 172371379. The next prime is 172371467. The reversal of 172371383 is 383173271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172371383 - 2² = 172371379 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172371343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86185691 + 86185692.

It is an arithmetic number, because the mean of its divisors is an integer number (86185692).

Almost surely, 2^172371383 is an apocalyptic number.

172371383 is a deficient number, since it is larger than the sum of its proper divisors (1).

172371383 is an equidigital number, since it uses as much as digits as its factorization.

172371383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 172371383 is about 13129.0282580243. The cubic root of 172371383 is about 556.5297546967.

The spelling of 172371383 in words is "one hundred seventy-two million, three hundred seventy-one thousand, three hundred eighty-three".