30920103 has 8 divisors (see below), whose sum is σ = 45807600. Its totient is φ = 20613384.

The previous prime is 30920089. The next prime is 30920137. The reversal of 30920103 is 30102903.

It is not a de Polignac number, because 30920103 - 2⁹ = 30919591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30920143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572568 + ... + 572621.

It is an arithmetic number, because the mean of its divisors is an integer number (5725950).

Almost surely, 2^30920103 is an apocalyptic number.

30920103 is a deficient number, since it is larger than the sum of its proper divisors (14887497).

30920103 is a wasteful number, since it uses less digits than its factorization.

30920103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145198 (or 1145192 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30920103 is about 5560.5847714067. The cubic root of 30920103 is about 313.8679546757.

The spelling of 30920103 in words is "thirty million, nine hundred twenty thousand, one hundred three".