313020220210021 has 4 divisors (see below), whose sum is σ = 313020284981292. Its totient is φ = 313020155438752.

The previous prime is 313020220210007. The next prime is 313020220210039. The reversal of 313020220210021 is 120012022020313.

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 162378595041796 + 150641625168225 = 12742786^2 + 12273615^2 .

It is a cyclic number.

It is not a de Polignac number, because 313020220210021 - 2¹⁷ = 313020220078949 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 (313020220210091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24495886 + ... + 35015551.

It is an arithmetic number, because the mean of its divisors is an integer number (78255071245323).

Almost surely, 2^{313020220210021} is an apocalyptic number.

It is an amenable number.

313020220210021 is a deficient number, since it is larger than the sum of its proper divisors (64771271).

313020220210021 is an equidigital number, since it uses as much as digits as its factorization.

313020220210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64771270.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 313020220210021 its reverse (120012022020313), we get a palindrome (433032242230334).

The spelling of 313020220210021 in words is "three hundred thirteen trillion, twenty billion, two hundred twenty million, two hundred ten thousand, twenty-one".