31013323213 has 2 divisors, whose sum is σ = 31013323214. Its totient is φ = 31013323212.

The previous prime is 31013323177. The next prime is 31013323217. The reversal of 31013323213 is 31232331013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28391576004 + 2621747209 = 168498^2 + 51203^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013323213 - 2¹⁷ = 31013192141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31013323217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506661606 + 15506661607.

It is an arithmetic number, because the mean of its divisors is an integer number (15506661607).

Almost surely, 2^31013323213 is an apocalyptic number.

It is an amenable number.

31013323213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013323213 is an equidigital number, since it uses as much as digits as its factorization.

31013323213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31013323213 its reverse (31232331013), we get a palindrome (62245654226).

The spelling of 31013323213 in words is "thirty-one billion, thirteen million, three hundred twenty-three thousand, two hundred thirteen".