313323213322021 has 4 divisors (see below), whose sum is σ = 358083672368032. Its totient is φ = 268562754276012.

The previous prime is 313323213321983. The next prime is 313323213322051. The reversal of 313323213322021 is 120223312323313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 313323213322021 - 2³⁵ = 313288853583653 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 (313323213322051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22380229522995 + ... + 22380229523008.

It is an arithmetic number, because the mean of its divisors is an integer number (89520918092008).

Almost surely, 2^{313323213322021} is an apocalyptic number.

It is an amenable number.

313323213322021 is a deficient number, since it is larger than the sum of its proper divisors (44760459046011).

313323213322021 is an equidigital number, since it uses as much as digits as its factorization.

313323213322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44760459046010.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 313323213322021 its reverse (120223312323313), we get a palindrome (433546525645334).

The spelling of 313323213322021 in words is "three hundred thirteen trillion, three hundred twenty-three billion, two hundred thirteen million, three hundred twenty-two thousand, twenty-one".