648107311 has 4 divisors (see below), whose sum is σ = 648199152. Its totient is φ = 648015472.

The previous prime is 648107263. The next prime is 648107321. The reversal of 648107311 is 113701846.

648107311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113701846 = 2 ⋅56850923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648107311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648107321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34366 + ... + 49771.

It is an arithmetic number, because the mean of its divisors is an integer number (162049788).

Almost surely, 2^648107311 is an apocalyptic number.

648107311 is a deficient number, since it is larger than the sum of its proper divisors (91841).

648107311 is an equidigital number, since it uses as much as digits as its factorization.

648107311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91840.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 648107311 is about 25457.9518225642. The cubic root of 648107311 is about 865.3975078329.

The spelling of 648107311 in words is "six hundred forty-eight million, one hundred seven thousand, three hundred eleven".