3000001691 has 2 divisors, whose sum is σ = 3000001692. Its totient is φ = 3000001690.

The previous prime is 3000001663. The next prime is 3000001709. The reversal of 3000001691 is 1961000003.

It is a strong prime.

It is an emirp because it is prime and its reverse (1961000003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3000001691 is a prime.

It is not a weakly prime, because it can be changed into another prime (3000001601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500000845 + 1500000846.

It is an arithmetic number, because the mean of its divisors is an integer number (1500000846).

Almost surely, 2^3000001691 is an apocalyptic number.

3000001691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3000001691 is an equidigital number, since it uses as much as digits as its factorization.

3000001691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 3000001691 is about 54772.2711871618. The cubic root of 3000001691 is about 1442.2498412900.

Adding to 3000001691 its reverse (1961000003), we get a palindrome (4961001694).

The spelling of 3000001691 in words is "three billion, one thousand, six hundred ninety-one".