31243634213 has 48 divisors (see below), whose sum is σ = 36139824000. Its totient is φ = 26954928000.

The previous prime is 31243634189. The next prime is 31243634251.

31243634213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31243634213 - 2²⁶ = 31176525349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31243634213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31243634293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70527170 + ... + 70527612.

It is an arithmetic number, because the mean of its divisors is an integer number (752913000).

Almost surely, 2^31243634213 is an apocalyptic number.

It is an amenable number.

31243634213 is a deficient number, since it is larger than the sum of its proper divisors (4896189787).

31243634213 is a wasteful number, since it uses less digits than its factorization.

31243634213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 783 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The spelling of 31243634213 in words is "thirty-one billion, two hundred forty-three million, six hundred thirty-four thousand, two hundred thirteen".