30111207 has 16 divisors (see below), whose sum is σ = 46570752. Its totient is φ = 16948800.

The previous prime is 30111197. The next prime is 30111217. The reversal of 30111207 is 70211103.

It is an interprime number because it is at equal distance from previous prime (30111197) and next prime (30111217).

It is not a de Polignac number, because 30111207 - 2⁷ = 30111079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111217) 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 15 ways as a sum of consecutive naturals, for example, 9294 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (2910672).

Almost surely, 2^30111207 is an apocalyptic number.

30111207 is a deficient number, since it is larger than the sum of its proper divisors (16459545).

30111207 is a wasteful number, since it uses less digits than its factorization.

30111207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 30111207 is about 5487.3679482973. The cubic root of 30111207 is about 311.1067171668.

The spelling of 30111207 in words is "thirty million, one hundred eleven thousand, two hundred seven".