313322042021 has 4 divisors (see below), whose sum is σ = 313359813612. Its totient is φ = 313284270432.

The previous prime is 313322041961. The next prime is 313322042027. The reversal of 313322042021 is 120240223313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 270384400225 + 42937641796 = 519985^2 + 207214^2 .

It is a cyclic number.

It is not a de Polignac number, because 313322042021 - 2³⁸ = 38444135077 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 (313322042027) 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, 18873350 + ... + 18889943.

It is an arithmetic number, because the mean of its divisors is an integer number (78339953403).

Almost surely, 2^313322042021 is an apocalyptic number.

It is an amenable number.

313322042021 is a deficient number, since it is larger than the sum of its proper divisors (37771591).

313322042021 is an equidigital number, since it uses as much as digits as its factorization.

313322042021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37771590.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 313322042021 its reverse (120240223313), we get a palindrome (433562265334).

The spelling of 313322042021 in words is "three hundred thirteen billion, three hundred twenty-two million, forty-two thousand, twenty-one".