30968057 has 2 divisors, whose sum is σ = 30968058. Its totient is φ = 30968056.

The previous prime is 30968023. The next prime is 30968089. The reversal of 30968057 is 75086903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30294016 + 674041 = 5504^2 + 821^2 .

It is an emirp because it is prime and its reverse (75086903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30968057 - 2²² = 26773753 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30968057.

It is not a weakly prime, because it can be changed into another prime (30968017) 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, 15484028 + 15484029.

It is an arithmetic number, because the mean of its divisors is an integer number (15484029).

Almost surely, 2^30968057 is an apocalyptic number.

It is an amenable number.

30968057 is a deficient number, since it is larger than the sum of its proper divisors (1).

30968057 is an equidigital number, since it uses as much as digits as its factorization.

30968057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 30968057 is about 5564.8950574112. The cubic root of 30968057 is about 314.0301301770.

The spelling of 30968057 in words is "thirty million, nine hundred sixty-eight thousand, fifty-seven".