313034030221021 has 4 divisors (see below), whose sum is σ = 313035961392700. Its totient is φ = 313032099049344.

The previous prime is 313034030221007. The next prime is 313034030221117. The reversal of 313034030221021 is 120122030430313.

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 253614383825625 + 59419646395396 = 15925275^2 + 7708414^2 .

It is a cyclic number.

It is not a de Polignac number, because 313034030221021 - 2³⁹ = 312484274407133 is a prime.

It is a super-3 number, since 3×313034030221021³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313034030221921) 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, 965342676 + ... + 965666893.

It is an arithmetic number, because the mean of its divisors is an integer number (78258990348175).

Almost surely, 2^{313034030221021} is an apocalyptic number.

It is an amenable number.

313034030221021 is a deficient number, since it is larger than the sum of its proper divisors (1931171679).

313034030221021 is a wasteful number, since it uses less digits than its factorization.

313034030221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931171678.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 313034030221021 its reverse (120122030430313), we get a palindrome (433156060651334).

The spelling of 313034030221021 in words is "three hundred thirteen trillion, thirty-four billion, thirty million, two hundred twenty-one thousand, twenty-one".