30520107 has 6 divisors (see below), whose sum is σ = 44084612. Its totient is φ = 20346732.

The previous prime is 30520097. The next prime is 30520111. The reversal of 30520107 is 70102503.

It is not a de Polignac number, because 30520107 - 2⁶ = 30520043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30520107.

It is not an unprimeable number, because it can be changed into a prime (30520157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1695553 + ... + 1695570.

Almost surely, 2^30520107 is an apocalyptic number.

30520107 is a deficient number, since it is larger than the sum of its proper divisors (13564505).

30520107 is a wasteful number, since it uses less digits than its factorization.

30520107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391129 (or 3391126 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 30520107 is about 5524.5006109150. The cubic root of 30520107 is about 312.5086316549.

The spelling of 30520107 in words is "thirty million, five hundred twenty thousand, one hundred seven".