30718901 has 2 divisors, whose sum is σ = 30718902. Its totient is φ = 30718900.

The previous prime is 30718889. The next prime is 30718907. The reversal of 30718901 is 10981703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30360100 + 358801 = 5510^2 + 599^2 .

It is an emirp because it is prime and its reverse (10981703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30718901 - 2⁶ = 30718837 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 (30718907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15359450 + 15359451.

It is an arithmetic number, because the mean of its divisors is an integer number (15359451).

Almost surely, 2^30718901 is an apocalyptic number.

It is an amenable number.

30718901 is a deficient number, since it is larger than the sum of its proper divisors (1).

30718901 is an equidigital number, since it uses as much as digits as its factorization.

30718901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 30718901 is about 5542.4634414672. The cubic root of 30718901 is about 313.1856764924.

The spelling of 30718901 in words is "thirty million, seven hundred eighteen thousand, nine hundred one".