31830112 has 12 divisors (see below), whose sum is σ = 62665596. Its totient is φ = 15915040.

The previous prime is 31830109. The next prime is 31830119. The reversal of 31830112 is 21103813.

It is a self number, because there is not a number n which added to its sum of digits gives 31830112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31830119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497314 + ... + 497377.

It is an arithmetic number, because the mean of its divisors is an integer number (5222133).

Almost surely, 2^31830112 is an apocalyptic number.

31830112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31830112 is a deficient number, since it is larger than the sum of its proper divisors (30835484).

31830112 is an equidigital number, since it uses as much as digits as its factorization.

31830112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994701 (or 994693 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 31830112 is about 5641.8181466616. The cubic root of 31830112 is about 316.9173790459.

Adding to 31830112 its reverse (21103813), we get a palindrome (52933925).

The spelling of 31830112 in words is "thirty-one million, eight hundred thirty thousand, one hundred twelve".