171048431 has 4 divisors (see below), whose sum is σ = 180051000. Its totient is φ = 162045864.

The previous prime is 171048391. The next prime is 171048457. The reversal of 171048431 is 134840171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 171048431 - 2¹⁰ = 171047407 is a prime.

It is a super-2 number, since 2×171048431² = 58515131495123522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171048394 and 171048403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171048461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4501256 + ... + 4501293.

It is an arithmetic number, because the mean of its divisors is an integer number (45012750).

Almost surely, 2^171048431 is an apocalyptic number.

171048431 is a deficient number, since it is larger than the sum of its proper divisors (9002569).

171048431 is an equidigital number, since it uses as much as digits as its factorization.

171048431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002568.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 171048431 is about 13078.5485050903. The cubic root of 171048431 is about 555.1023061679.

The spelling of 171048431 in words is "one hundred seventy-one million, forty-eight thousand, four hundred thirty-one".