31230203213 has 12 divisors (see below), whose sum is σ = 34337786784. Its totient is φ = 28382514600.

The previous prime is 31230203203. The next prime is 31230203267.

31230203213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31230203213 - 2⁴ = 31230203197 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 (31230203203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381758 + ... + 456288.

It is an arithmetic number, because the mean of its divisors is an integer number (2861482232).

Almost surely, 2^31230203213 is an apocalyptic number.

It is an amenable number.

31230203213 is a deficient number, since it is larger than the sum of its proper divisors (3107583571).

31230203213 is a wasteful number, since it uses less digits than its factorization.

31230203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78016 (or 78005 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The spelling of 31230203213 in words is "thirty-one billion, two hundred thirty million, two hundred three thousand, two hundred thirteen".