171123243 has 16 divisors (see below), whose sum is σ = 241105920. Its totient is φ = 107737344.

The previous prime is 171123233. The next prime is 171123301. The reversal of 171123243 is 342321171.

It is a happy number.

It is not a de Polignac number, because 171123243 - 2⁶ = 171123179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171123223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10246 + ... + 21147.

It is an arithmetic number, because the mean of its divisors is an integer number (15069120).

Almost surely, 2^171123243 is an apocalyptic number.

171123243 is a deficient number, since it is larger than the sum of its proper divisors (69982677).

171123243 is a wasteful number, since it uses less digits than its factorization.

171123243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31498.

The product of its digits is 1008, while the sum is 24.

The square root of 171123243 is about 13081.4082957455. The cubic root of 171123243 is about 555.1832233298.

The spelling of 171123243 in words is "one hundred seventy-one million, one hundred twenty-three thousand, two hundred forty-three".