312223204001 has 4 divisors (see below), whose sum is σ = 320661669012. Its totient is φ = 303784738992.

The previous prime is 312223203961. The next prime is 312223204003. The reversal of 312223204001 is 100402322213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100402322213 = 349 ⋅287685737.

It can be written as a sum of positive squares in 2 ways, for example, as 284542230625 + 27680973376 = 533425^2 + 166376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312223204001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312223204003) 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, 4219232450 + ... + 4219232523.

It is an arithmetic number, because the mean of its divisors is an integer number (80165417253).

Almost surely, 2^312223204001 is an apocalyptic number.

It is an amenable number.

312223204001 is a deficient number, since it is larger than the sum of its proper divisors (8438465011).

312223204001 is an equidigital number, since it uses as much as digits as its factorization.

312223204001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438465010.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 312223204001 its reverse (100402322213), we get a palindrome (412625526214).

The spelling of 312223204001 in words is "three hundred twelve billion, two hundred twenty-three million, two hundred four thousand, one".