30531130 has 32 divisors (see below), whose sum is σ = 63613440. Its totient is φ = 10333440.

The previous prime is 30531089. The next prime is 30531139. The reversal of 30531130 is 3113503.

It is not an unprimeable number, because it can be changed into a prime (30531139) 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, 2770 + ... + 8290.

It is an arithmetic number, because the mean of its divisors is an integer number (1987920).

Almost surely, 2^30531130 is an apocalyptic number.

30531130 is an abundant number, since it is smaller than the sum of its proper divisors (33082310).

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

30531130 is a wasteful number, since it uses less digits than its factorization.

30531130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 30531130 is about 5525.4981675863. The cubic root of 30531130 is about 312.5462502213.

Adding to 30531130 its reverse (3113503), we get a palindrome (33644633).

The spelling of 30531130 in words is "thirty million, five hundred thirty-one thousand, one hundred thirty".