312129245 has 8 divisors (see below), whose sum is σ = 394268640. Its totient is φ = 236561040.

The previous prime is 312129229. The next prime is 312129271. The reversal of 312129245 is 542921213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312129245 - 2⁴ = 312129229 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1642691 + ... + 1642880.

It is an arithmetic number, because the mean of its divisors is an integer number (49283580).

Almost surely, 2^312129245 is an apocalyptic number.

It is an amenable number.

312129245 is a deficient number, since it is larger than the sum of its proper divisors (82139395).

312129245 is a wasteful number, since it uses less digits than its factorization.

312129245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285595.

The product of its digits is 4320, while the sum is 29.

The square root of 312129245 is about 17667.1798824827. The cubic root of 312129245 is about 678.3359289054.

The spelling of 312129245 in words is "three hundred twelve million, one hundred twenty-nine thousand, two hundred forty-five".