312912545 has 16 divisors (see below), whose sum is σ = 409974912. Its totient is φ = 227381760.

The previous prime is 312912541. The next prime is 312912559. The reversal of 312912545 is 545219213.

It is not a de Polignac number, because 312912545 - 2² = 312912541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312912541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123764 + ... + 126266.

It is an arithmetic number, because the mean of its divisors is an integer number (25623432).

Almost surely, 2^312912545 is an apocalyptic number.

It is an amenable number.

312912545 is a deficient number, since it is larger than the sum of its proper divisors (97062367).

312912545 is a wasteful number, since it uses less digits than its factorization.

312912545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792.

The product of its digits is 10800, while the sum is 32.

The square root of 312912545 is about 17689.3342158488. The cubic root of 312912545 is about 678.9028913494.

The spelling of 312912545 in words is "three hundred twelve million, nine hundred twelve thousand, five hundred forty-five".