312448739 has 2 divisors, whose sum is σ = 312448740. Its totient is φ = 312448738.

The previous prime is 312448733. The next prime is 312448781. The reversal of 312448739 is 937844213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312448739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312448696 and 312448705.

It is not a weakly prime, because it can be changed into another prime (312448733) by changing a digit.

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 as a sum of consecutive naturals, namely, 156224369 + 156224370.

It is an arithmetic number, because the mean of its divisors is an integer number (156224370).

Almost surely, 2^312448739 is an apocalyptic number.

312448739 is a deficient number, since it is larger than the sum of its proper divisors (1).

312448739 is an equidigital number, since it uses as much as digits as its factorization.

312448739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 312448739 is about 17676.2195901726. The cubic root of 312448739 is about 678.5672971166.

The spelling of 312448739 in words is "three hundred twelve million, four hundred forty-eight thousand, seven hundred thirty-nine".