31542452513207 has 2 divisors, whose sum is σ = 31542452513208. Its totient is φ = 31542452513206.

The previous prime is 31542452513203. The next prime is 31542452513291. The reversal of 31542452513207 is 70231525424513.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70231525424513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31542452513207 - 2² = 31542452513203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31542452513203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771226256603 + 15771226256604.

It is an arithmetic number, because the mean of its divisors is an integer number (15771226256604).

Almost surely, 2^{31542452513207} is an apocalyptic number.

31542452513207 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542452513207 is an equidigital number, since it uses as much as digits as its factorization.

31542452513207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 31542452513207 in words is "thirty-one trillion, five hundred forty-two billion, four hundred fifty-two million, five hundred thirteen thousand, two hundred seven".