30900871 has 2 divisors, whose sum is σ = 30900872. Its totient is φ = 30900870.

The previous prime is 30900853. The next prime is 30900907. The reversal of 30900871 is 17800903.

It is a weak prime.

It is an emirp because it is prime and its reverse (17800903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30900871 - 2⁷ = 30900743 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 (30900841) 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, 15450435 + 15450436.

It is an arithmetic number, because the mean of its divisors is an integer number (15450436).

Almost surely, 2^30900871 is an apocalyptic number.

30900871 is a deficient number, since it is larger than the sum of its proper divisors (1).

30900871 is an equidigital number, since it uses as much as digits as its factorization.

30900871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 30900871 is about 5558.8551878962. The cubic root of 30900871 is about 313.8028669188.

The spelling of 30900871 in words is "thirty million, nine hundred thousand, eight hundred seventy-one".