312492171 has 4 divisors (see below), whose sum is σ = 416656232. Its totient is φ = 208328112.

The previous prime is 312492161. The next prime is 312492217. The reversal of 312492171 is 171294213.

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

It is not a de Polignac number, because 312492171 - 2⁷ = 312492043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312492101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52082026 + ... + 52082031.

It is an arithmetic number, because the mean of its divisors is an integer number (104164058).

Almost surely, 2^312492171 is an apocalyptic number.

312492171 is a deficient number, since it is larger than the sum of its proper divisors (104164061).

312492171 is a wasteful number, since it uses less digits than its factorization.

312492171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104164060.

The product of its digits is 3024, while the sum is 30.

The square root of 312492171 is about 17677.4480907172. The cubic root of 312492171 is about 678.5987371213.

The spelling of 312492171 in words is "three hundred twelve million, four hundred ninety-two thousand, one hundred seventy-one".