31359718343 has 2 divisors, whose sum is σ = 31359718344. Its totient is φ = 31359718342.

The previous prime is 31359718319. The next prime is 31359718387. The reversal of 31359718343 is 34381795313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31359718343 - 2²⁰ = 31358669767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31359718043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15679859171 + 15679859172.

It is an arithmetic number, because the mean of its divisors is an integer number (15679859172).

Almost surely, 2^31359718343 is an apocalyptic number.

31359718343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31359718343 is an equidigital number, since it uses as much as digits as its factorization.

31359718343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The spelling of 31359718343 in words is "thirty-one billion, three hundred fifty-nine million, seven hundred eighteen thousand, three hundred forty-three".