30131112 has 64 divisors (see below), whose sum is σ = 86515200. Its totient is φ = 8648640.

The previous prime is 30131107. The next prime is 30131113. The reversal of 30131112 is 21113103.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30131113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2013 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (1351800).

Almost surely, 2^30131112 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 30131112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43257600).

30131112 is an abundant number, since it is smaller than the sum of its proper divisors (56384088).

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

30131112 is a wasteful number, since it uses less digits than its factorization.

30131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 30131112 is about 5489.1813597293. The cubic root of 30131112 is about 311.1752543859.

Adding to 30131112 its reverse (21113103), we get a palindrome (51244215).

Subtracting from 30131112 its reverse (21113103), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 301 and 31112, that added together give a palindrome (31413).

The spelling of 30131112 in words is "thirty million, one hundred thirty-one thousand, one hundred twelve".