30512207 has 12 divisors (see below), whose sum is σ = 33672408. Its totient is φ = 27627600.

The previous prime is 30512197. The next prime is 30512219. The reversal of 30512207 is 70221503.

It is not a de Polignac number, because 30512207 - 2⁶ = 30512143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512257) 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 in 11 ways as a sum of consecutive naturals, for example, 55508 + ... + 56054.

It is an arithmetic number, because the mean of its divisors is an integer number (2806034).

Almost surely, 2^30512207 is an apocalyptic number.

30512207 is a deficient number, since it is larger than the sum of its proper divisors (3160201).

30512207 is a wasteful number, since it uses less digits than its factorization.

30512207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 30512207 is about 5523.7855678873. The cubic root of 30512207 is about 312.4816654843.

The spelling of 30512207 in words is "thirty million, five hundred twelve thousand, two hundred seven".