20331112 has 16 divisors (see below), whose sum is σ = 38245860. Its totient is φ = 10132224.

The previous prime is 20331109. The next prime is 20331127. The reversal of 20331112 is 21113302.

It can be written as a sum of positive squares in 2 ways, for example, as 19236996 + 1094116 = 4386^2 + 1046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20331092 and 20331101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1473 + ... + 6544.

Almost surely, 2^20331112 is an apocalyptic number.

It is an amenable number.

20331112 is a deficient number, since it is larger than the sum of its proper divisors (17914748).

20331112 is a wasteful number, since it uses less digits than its factorization.

20331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340 (or 8336 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20331112 is about 4509.0034375680. The cubic root of 20331112 is about 272.9315307277.

Adding to 20331112 its reverse (21113302), we get a palindrome (41444414).

The spelling of 20331112 in words is "twenty million, three hundred thirty-one thousand, one hundred twelve".