312170421 has 8 divisors (see below), whose sum is σ = 434324160. Its totient is φ = 199065152.

The previous prime is 312170389. The next prime is 312170431. The reversal of 312170421 is 124071213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312170421 - 2⁵ = 312170389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312170431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2262036 + ... + 2262173.

It is an arithmetic number, because the mean of its divisors is an integer number (54290520).

Almost surely, 2^312170421 is an apocalyptic number.

It is an amenable number.

312170421 is a deficient number, since it is larger than the sum of its proper divisors (122153739).

312170421 is a wasteful number, since it uses less digits than its factorization.

312170421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524235.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 312170421 is about 17668.3451686908. The cubic root of 312170421 is about 678.3657562205.

The spelling of 312170421 in words is "three hundred twelve million, one hundred seventy thousand, four hundred twenty-one".