312279145 has 8 divisors (see below), whose sum is σ = 376979904. Its totient is φ = 248326704.

The previous prime is 312279109. The next prime is 312279169. The reversal of 312279145 is 541972213.

It is a happy number.

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 312279145 - 2²³ = 303890537 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 312279145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186159 + ... + 187828.

It is an arithmetic number, because the mean of its divisors is an integer number (47122488).

Almost surely, 2^312279145 is an apocalyptic number.

It is an amenable number.

312279145 is a deficient number, since it is larger than the sum of its proper divisors (64700759).

312279145 is a wasteful number, since it uses less digits than its factorization.

312279145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374159.

The product of its digits is 15120, while the sum is 34.

The square root of 312279145 is about 17671.4217028512. The cubic root of 312279145 is about 678.4445017525. Note that the first 3 decimals are identical.

The spelling of 312279145 in words is "three hundred twelve million, two hundred seventy-nine thousand, one hundred forty-five".