31303202213 has 12 divisors (see below), whose sum is σ = 32003754432. Its totient is φ = 30617681880.

The previous prime is 31303202207. The next prime is 31303202233. The reversal of 31303202213 is 31220230313.

It is not a de Polignac number, because 31303202213 - 2²⁰ = 31302153637 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 (31303202233) 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, 4474148 + ... + 4481138.

It is an arithmetic number, because the mean of its divisors is an integer number (2666979536).

Almost surely, 2^31303202213 is an apocalyptic number.

It is an amenable number.

31303202213 is a deficient number, since it is larger than the sum of its proper divisors (700552219).

31303202213 is an equidigital number, since it uses as much as digits as its factorization.

31303202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9112 (or 9065 counting only the distinct ones).

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

Adding to 31303202213 its reverse (31220230313), we get a palindrome (62523432526).

The spelling of 31303202213 in words is "thirty-one billion, three hundred three million, two hundred two thousand, two hundred thirteen".