31302030213 has 12 divisors (see below), whose sum is σ = 46265533600. Its totient is φ = 20382717096.

The previous prime is 31302030209. The next prime is 31302030217. The reversal of 31302030213 is 31203020313.

It is an interprime number because it is at equal distance from previous prime (31302030209) and next prime (31302030217).

It is not a de Polignac number, because 31302030213 - 2² = 31302030209 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 (31302030217) 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, 40441513 + ... + 40442286.

Almost surely, 2^31302030213 is an apocalyptic number.

It is an amenable number.

31302030213 is a deficient number, since it is larger than the sum of its proper divisors (14963503387).

31302030213 is a wasteful number, since it uses less digits than its factorization.

31302030213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80883848 (or 80883845 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31302030213 its reverse (31203020313), we get a palindrome (62505050526).

The spelling of 31302030213 in words is "thirty-one billion, three hundred two million, thirty thousand, two hundred thirteen".