31286833868213 has 16 divisors (see below), whose sum is σ = 39803022153600. Its totient is φ = 24379351063200.

The previous prime is 31286833868209. The next prime is 31286833868347.

31286833868213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31286833868213 - 2² = 31286833868209 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 (31286833865213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4146144368 + ... + 4146151913.

It is an arithmetic number, because the mean of its divisors is an integer number (2487688884600).

Almost surely, 2^{31286833868213} is an apocalyptic number.

It is an amenable number.

31286833868213 is a deficient number, since it is larger than the sum of its proper divisors (8516188285387).

31286833868213 is an equidigital number, since it uses as much as digits as its factorization.

31286833868213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8292296313 (or 8292296299 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 62.

The spelling of 31286833868213 in words is "thirty-one trillion, two hundred eighty-six billion, eight hundred thirty-three million, eight hundred sixty-eight thousand, two hundred thirteen".