312081136 has 20 divisors (see below), whose sum is σ = 604931272. Its totient is φ = 155969856.

The previous prime is 312081131. The next prime is 312081163. The reversal of 312081136 is 631180213.

312081136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 312081136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312081131) 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, 65590 + ... + 70186.

Almost surely, 2^312081136 is an apocalyptic number.

It is an amenable number.

312081136 is a deficient number, since it is larger than the sum of its proper divisors (292850136).

312081136 is a wasteful number, since it uses less digits than its factorization.

312081136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8848 (or 8842 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 312081136 is about 17665.8182940955. The cubic root of 312081136 is about 678.3010760994.

The spelling of 312081136 in words is "three hundred twelve million, eighty-one thousand, one hundred thirty-six".