31385749559 has 2 divisors, whose sum is σ = 31385749560. Its totient is φ = 31385749558.

The previous prime is 31385749513. The next prime is 31385749589. The reversal of 31385749559 is 95594758313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31385749559 - 2⁸ = 31385749303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31385749498 and 31385749507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31385749589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15692874779 + 15692874780.

It is an arithmetic number, because the mean of its divisors is an integer number (15692874780).

Almost surely, 2^31385749559 is an apocalyptic number.

31385749559 is a deficient number, since it is larger than the sum of its proper divisors (1).

31385749559 is an equidigital number, since it uses as much as digits as its factorization.

31385749559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 59.

The spelling of 31385749559 in words is "thirty-one billion, three hundred eighty-five million, seven hundred forty-nine thousand, five hundred fifty-nine".