312875449 has 2 divisors, whose sum is σ = 312875450. Its totient is φ = 312875448.

The previous prime is 312875447. The next prime is 312875501. The reversal of 312875449 is 944578213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297217600 + 15657849 = 17240^2 + 3957^2 .

It is a cyclic number.

It is not a de Polignac number, because 312875449 - 2¹ = 312875447 is a prime.

Together with 312875447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312875443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156437724 + 156437725.

It is an arithmetic number, because the mean of its divisors is an integer number (156437725).

Almost surely, 2^312875449 is an apocalyptic number.

It is an amenable number.

312875449 is a deficient number, since it is larger than the sum of its proper divisors (1).

312875449 is an equidigital number, since it uses as much as digits as its factorization.

312875449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 312875449 is about 17688.2856433290. The cubic root of 312875449 is about 678.8760621524.

The spelling of 312875449 in words is "three hundred twelve million, eight hundred seventy-five thousand, four hundred forty-nine".