31596797 has 2 divisors, whose sum is σ = 31596798. Its totient is φ = 31596796.

The previous prime is 31596793. The next prime is 31596821. The reversal of 31596797 is 79769513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31595641 + 1156 = 5621^2 + 34^2 .

It is an emirp because it is prime and its reverse (79769513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31596797 - 2² = 31596793 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31596793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15798398 + 15798399.

It is an arithmetic number, because the mean of its divisors is an integer number (15798399).

Almost surely, 2^31596797 is an apocalyptic number.

It is an amenable number.

31596797 is a deficient number, since it is larger than the sum of its proper divisors (1).

31596797 is an equidigital number, since it uses as much as digits as its factorization.

31596797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 47.

The square root of 31596797 is about 5621.1028277376. The cubic root of 31596797 is about 316.1411436188.

The spelling of 31596797 in words is "thirty-one million, five hundred ninety-six thousand, seven hundred ninety-seven".