31313021332313 has 8 divisors (see below), whose sum is σ = 35820953190528. Its totient is φ = 26813750248224.

The previous prime is 31313021332211. The next prime is 31313021332421. The reversal of 31313021332313 is 31323312031313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31313021332313 - 2¹⁴ = 31313021315929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313021302313) 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 7 ways as a sum of consecutive naturals, for example, 2165185781 + ... + 2165200242.

It is an arithmetic number, because the mean of its divisors is an integer number (4477619148816).

Almost surely, 2^{31313021332313} is an apocalyptic number.

It is an amenable number.

31313021332313 is a deficient number, since it is larger than the sum of its proper divisors (4507931858215).

31313021332313 is a wasteful number, since it uses less digits than its factorization.

31313021332313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330387063.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 31313021332313 its reverse (31323312031313), we get a palindrome (62636333363626).

The spelling of 31313021332313 in words is "thirty-one trillion, three hundred thirteen billion, twenty-one million, three hundred thirty-two thousand, three hundred thirteen".