30129111 has 16 divisors (see below), whose sum is σ = 45675520. Its totient is φ = 19618200.

The previous prime is 30129109. The next prime is 30129133. The reversal of 30129111 is 11192103.

It is not a de Polignac number, because 30129111 - 2¹ = 30129109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30129311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11815 + ... + 14136.

It is an arithmetic number, because the mean of its divisors is an integer number (2854720).

Almost surely, 2^30129111 is an apocalyptic number.

30129111 is a deficient number, since it is larger than the sum of its proper divisors (15546409).

30129111 is a wasteful number, since it uses less digits than its factorization.

30129111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26003 (or 25997 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 30129111 is about 5488.9990890872. Note that the first 3 decimals coincide. The cubic root of 30129111 is about 311.1683658751.

The spelling of 30129111 in words is "thirty million, one hundred twenty-nine thousand, one hundred eleven".