30958901 has 2 divisors, whose sum is σ = 30958902. Its totient is φ = 30958900.

The previous prime is 30958883. The next prime is 30958913. The reversal of 30958901 is 10985903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30195025 + 763876 = 5495^2 + 874^2 .

It is an emirp because it is prime and its reverse (10985903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30958901 is a prime.

It is a super-2 number, since 2×30958901² = 1916907102255602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30958931) 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, 15479450 + 15479451.

It is an arithmetic number, because the mean of its divisors is an integer number (15479451).

Almost surely, 2^30958901 is an apocalyptic number.

It is an amenable number.

30958901 is a deficient number, since it is larger than the sum of its proper divisors (1).

30958901 is an equidigital number, since it uses as much as digits as its factorization.

30958901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 30958901 is about 5564.0723395729. The cubic root of 30958901 is about 313.9991784635. Note that the first 3 decimals are identical.

The spelling of 30958901 in words is "thirty million, nine hundred fifty-eight thousand, nine hundred one".