31755596497 has 2 divisors, whose sum is σ = 31755596498. Its totient is φ = 31755596496.

The previous prime is 31755596399. The next prime is 31755596581. The reversal of 31755596497 is 79469555713.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31666558401 + 89038096 = 177951^2 + 9436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31755596497 is a prime.

It is not a weakly prime, because it can be changed into another prime (31755596297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15877798248 + 15877798249.

It is an arithmetic number, because the mean of its divisors is an integer number (15877798249).

Almost surely, 2^31755596497 is an apocalyptic number.

It is an amenable number.

31755596497 is a deficient number, since it is larger than the sum of its proper divisors (1).

31755596497 is an equidigital number, since it uses as much as digits as its factorization.

31755596497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35721000, while the sum is 61.

The spelling of 31755596497 in words is "thirty-one billion, seven hundred fifty-five million, five hundred ninety-six thousand, four hundred ninety-seven".