31013143052317 has 2 divisors, whose sum is σ = 31013143052318. Its totient is φ = 31013143052316.

The previous prime is 31013143052257. The next prime is 31013143052351. The reversal of 31013143052317 is 71325034131013.

It is an a-pointer prime, because the next prime (31013143052351) can be obtained adding 31013143052317 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25200289560121 + 5812853492196 = 5019989^2 + 2410986^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013143052317 - 2¹¹ = 31013143050269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31013143052357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506571526158 + 15506571526159.

It is an arithmetic number, because the mean of its divisors is an integer number (15506571526159).

Almost surely, 2^{31013143052317} is an apocalyptic number.

It is an amenable number.

31013143052317 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013143052317 is an equidigital number, since it uses as much as digits as its factorization.

31013143052317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 31013143052317 in words is "thirty-one trillion, thirteen billion, one hundred forty-three million, fifty-two thousand, three hundred seventeen".