312156161 has 8 divisors (see below), whose sum is σ = 334532544. Its totient is φ = 290513520.

The previous prime is 312156139. The next prime is 312156179. The reversal of 312156161 is 161651213.

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 312156161 - 2¹⁴ = 312139777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312156161.

It is not an unprimeable number, because it can be changed into a prime (312156181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182555 + ... + 184256.

It is an arithmetic number, because the mean of its divisors is an integer number (41816568).

Almost surely, 2^312156161 is an apocalyptic number.

It is an amenable number.

312156161 is a deficient number, since it is larger than the sum of its proper divisors (22376383).

312156161 is a wasteful number, since it uses less digits than its factorization.

312156161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366871.

The product of its digits is 1080, while the sum is 26.

The square root of 312156161 is about 17667.9416175173. The cubic root of 312156161 is about 678.3554267740.

The spelling of 312156161 in words is "three hundred twelve million, one hundred fifty-six thousand, one hundred sixty-one".