30511104 has 104 divisors (see below), whose sum is σ = 88069632. Its totient is φ = 9338880.

The previous prime is 30511097. The next prime is 30511109. The reversal of 30511104 is 40111503.

It is a tau number, because it is divible by the number of its divisors (104).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30511109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159649 + ... + 159839.

Almost surely, 2^30511104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30511104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44034816).

30511104 is an abundant number, since it is smaller than the sum of its proper divisors (57558528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30511104 is a wasteful number, since it uses less digits than its factorization.

30511104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 30511104 is about 5523.6857260347. The cubic root of 30511104 is about 312.4779000905.

Adding to 30511104 its reverse (40111503), we get a palindrome (70622607).

The spelling of 30511104 in words is "thirty million, five hundred eleven thousand, one hundred four".