312220304545 has 16 divisors (see below), whose sum is σ = 383399292672. Its totient is φ = 243953619840.

The previous prime is 312220304521. The next prime is 312220304551. The reversal of 312220304545 is 545403022213.

It is not a de Polignac number, because 312220304545 - 2³⁵ = 277860566177 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 5430469 + ... + 5487661.

It is an arithmetic number, because the mean of its divisors is an integer number (23962455792).

Almost surely, 2^312220304545 is an apocalyptic number.

It is an amenable number.

312220304545 is a deficient number, since it is larger than the sum of its proper divisors (71178988127).

312220304545 is a wasteful number, since it uses less digits than its factorization.

312220304545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82632.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 312220304545 its reverse (545403022213), we get a palindrome (857623326758).

The spelling of 312220304545 in words is "three hundred twelve billion, two hundred twenty million, three hundred four thousand, five hundred forty-five".