20031244 has 24 divisors (see below), whose sum is σ = 37603440. Its totient is φ = 9307584.

The previous prime is 20031223. The next prime is 20031281. The reversal of 20031244 is 44213002.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1542 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (1566810).

Almost surely, 2^20031244 is an apocalyptic number.

It is an amenable number.

20031244 is a deficient number, since it is larger than the sum of its proper divisors (17572196).

20031244 is a wasteful number, since it uses less digits than its factorization.

20031244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049 (or 5047 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20031244 is about 4475.6277771951. The cubic root of 20031244 is about 271.5830368916.

Adding to 20031244 its reverse (44213002), we get a palindrome (64244246).

The spelling of 20031244 in words is "twenty million, thirty-one thousand, two hundred forty-four".