30916997 has 2 divisors, whose sum is σ = 30916998. Its totient is φ = 30916996.

The previous prime is 30916981. The next prime is 30917017. The reversal of 30916997 is 79961903.

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., 15792676 + 15124321 = 3974^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 30916997 - 2⁴ = 30916981 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 (30916937) 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, 15458498 + 15458499.

It is an arithmetic number, because the mean of its divisors is an integer number (15458499).

Almost surely, 2^30916997 is an apocalyptic number.

It is an amenable number.

30916997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30916997 is an equidigital number, since it uses as much as digits as its factorization.

30916997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 30916997 is about 5560.3054772198. The cubic root of 30916997 is about 313.8574447225.

It can be divided in two parts, 30916 and 997, that added together give a palindrome (31913).

The spelling of 30916997 in words is "thirty million, nine hundred sixteen thousand, nine hundred ninety-seven".