20311244 has 6 divisors (see below), whose sum is σ = 35544684. Its totient is φ = 10155620.

The previous prime is 20311211. The next prime is 20311273. The reversal of 20311244 is 44211302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2538902 + ... + 2538909.

It is an arithmetic number, because the mean of its divisors is an integer number (5924114).

Almost surely, 2^20311244 is an apocalyptic number.

It is an amenable number.

20311244 is a deficient number, since it is larger than the sum of its proper divisors (15233440).

20311244 is a wasteful number, since it uses less digits than its factorization.

20311244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077815 (or 5077813 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20311244 is about 4506.7997514866. The cubic root of 20311244 is about 272.8425968977.

Adding to 20311244 its reverse (44211302), we get a palindrome (64522546).

The spelling of 20311244 in words is "twenty million, three hundred eleven thousand, two hundred forty-four".