31020133310213 has 2 divisors, whose sum is σ = 31020133310214. Its totient is φ = 31020133310212.

The previous prime is 31020133310167. The next prime is 31020133310297. The reversal of 31020133310213 is 31201333102013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29359741282369 + 1660392027844 = 5418463^2 + 1288562^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020133310213 - 2¹⁰ = 31020133309189 is a prime.

It is a super-2 number, since 2×31020133310213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020133312213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510066655106 + 15510066655107.

It is an arithmetic number, because the mean of its divisors is an integer number (15510066655107).

Almost surely, 2^{31020133310213} is an apocalyptic number.

It is an amenable number.

31020133310213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020133310213 is an equidigital number, since it uses as much as digits as its factorization.

31020133310213 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 23.

Adding to 31020133310213 its reverse (31201333102013), we get a palindrome (62221466412226).

The spelling of 31020133310213 in words is "thirty-one trillion, twenty billion, one hundred thirty-three million, three hundred ten thousand, two hundred thirteen".