30731104 has 36 divisors (see below), whose sum is σ = 64289484. Its totient is φ = 14457344.

The previous prime is 30731089. The next prime is 30731117. The reversal of 30731104 is 40113703.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 7587 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (1785819).

Almost surely, 2^30731104 is an apocalyptic number.

30731104 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30731104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32144742).

30731104 is an abundant number, since it is smaller than the sum of its proper divisors (33558380).

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

30731104 is a wasteful number, since it uses less digits than its factorization.

30731104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3342 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 30731104 is about 5543.5641964354. The cubic root of 30731104 is about 313.2271417221.

Adding to 30731104 its reverse (40113703), we get a palindrome (70844807).

The spelling of 30731104 in words is "thirty million, seven hundred thirty-one thousand, one hundred four".