312081137 has 8 divisors (see below), whose sum is σ = 329095200. Its totient is φ = 295125984.

The previous prime is 312081131. The next prime is 312081163. The reversal of 312081137 is 731180213.

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 312081137 - 2¹⁰ = 312080113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312081131) 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, 3623 + ... + 25244.

It is an arithmetic number, because the mean of its divisors is an integer number (41136900).

Almost surely, 2^312081137 is an apocalyptic number.

It is an amenable number.

312081137 is a deficient number, since it is larger than the sum of its proper divisors (17014063).

312081137 is a wasteful number, since it uses less digits than its factorization.

312081137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29455.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 312081137 is about 17665.8183223988. The cubic root of 312081137 is about 678.3010768239.

The spelling of 312081137 in words is "three hundred twelve million, eighty-one thousand, one hundred thirty-seven".