312221320003 has 4 divisors (see below), whose sum is σ = 314984340648. Its totient is φ = 309458299360.

The previous prime is 312221320001. The next prime is 312221320127. The reversal of 312221320003 is 300023122213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312221320003 - 2¹ = 312221320001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312221320001) 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, 1381510153 + ... + 1381510378.

It is an arithmetic number, because the mean of its divisors is an integer number (78746085162).

Almost surely, 2^312221320003 is an apocalyptic number.

312221320003 is a deficient number, since it is larger than the sum of its proper divisors (2763020645).

312221320003 is a wasteful number, since it uses less digits than its factorization.

312221320003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763020644.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 312221320003 its reverse (300023122213), we get a palindrome (612244442216).

The spelling of 312221320003 in words is "three hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, three".