31230012320413 has 2 divisors, whose sum is σ = 31230012320414. Its totient is φ = 31230012320412.

The previous prime is 31230012320399. The next prime is 31230012320459. The reversal of 31230012320413 is 31402321003213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30982114880964 + 247897439449 = 5566158^2 + 497893^2 .

It is a cyclic number.

It is not a de Polignac number, because 31230012320413 - 2¹³ = 31230012312221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31230012321413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615006160206 + 15615006160207.

It is an arithmetic number, because the mean of its divisors is an integer number (15615006160207).

Almost surely, 2^{31230012320413} is an apocalyptic number.

It is an amenable number.

31230012320413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230012320413 is an equidigital number, since it uses as much as digits as its factorization.

31230012320413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31230012320413 its reverse (31402321003213), we get a palindrome (62632333323626).

The spelling of 31230012320413 in words is "thirty-one trillion, two hundred thirty billion, twelve million, three hundred twenty thousand, four hundred thirteen".