313221321019 has 4 divisors (see below), whose sum is σ = 313225430544. Its totient is φ = 313217211496.

The previous prime is 313221321001. The next prime is 313221321031. The reversal of 313221321019 is 910123122313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910123122313 = 24421 ⋅37268053.

It is a cyclic number.

It is not a de Polignac number, because 313221321019 - 2⁷ = 313221320891 is a prime.

It is a super-2 number, since 2×313221321019² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313221321619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938232 + ... + 2093605.

It is an arithmetic number, because the mean of its divisors is an integer number (78306357636).

Almost surely, 2^313221321019 is an apocalyptic number.

313221321019 is a deficient number, since it is larger than the sum of its proper divisors (4109525).

313221321019 is an equidigital number, since it uses as much as digits as its factorization.

313221321019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109524.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 313221321019 in words is "three hundred thirteen billion, two hundred twenty-one million, three hundred twenty-one thousand, nineteen".