313203334021 has 4 divisors (see below), whose sum is σ = 313427212000. Its totient is φ = 312979456044.

The previous prime is 313203333979. The next prime is 313203334091. The reversal of 313203334021 is 120433302313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120433302313 = 127 ⋅948293719.

It is a cyclic number.

It is not a de Polignac number, because 313203334021 - 2⁷ = 313203333893 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 (313203334091) 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, 111936891 + ... + 111939688.

It is an arithmetic number, because the mean of its divisors is an integer number (78356803000).

Almost surely, 2^313203334021 is an apocalyptic number.

It is an amenable number.

313203334021 is a deficient number, since it is larger than the sum of its proper divisors (223877979).

313203334021 is a wasteful number, since it uses less digits than its factorization.

313203334021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223877978.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 313203334021 its reverse (120433302313), we get a palindrome (433636636334).

The spelling of 313203334021 in words is "three hundred thirteen billion, two hundred three million, three hundred thirty-four thousand, twenty-one".