31302010213 has 2 divisors, whose sum is σ = 31302010214. Its totient is φ = 31302010212.

The previous prime is 31302010163. The next prime is 31302010297. The reversal of 31302010213 is 31201020313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25223157124 + 6078853089 = 158818^2 + 77967^2 .

It is a cyclic number.

It is not a de Polignac number, because 31302010213 - 2³³ = 22712075621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302010813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651005106 + 15651005107.

It is an arithmetic number, because the mean of its divisors is an integer number (15651005107).

Almost surely, 2^31302010213 is an apocalyptic number.

It is an amenable number.

31302010213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302010213 is an equidigital number, since it uses as much as digits as its factorization.

31302010213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31302010213 its reverse (31201020313), we get a palindrome (62503030526).

The spelling of 31302010213 in words is "thirty-one billion, three hundred two million, ten thousand, two hundred thirteen".