20313344 has 18 divisors (see below), whose sum is σ = 40547850. Its totient is φ = 10156544.

The previous prime is 20313343. The next prime is 20313361. The reversal of 20313344 is 44331302.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 8479744 = 3440^2 + 2912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313343) 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, 39419 + ... + 39930.

Almost surely, 2^20313344 is an apocalyptic number.

It is an amenable number.

20313344 is a deficient number, since it is larger than the sum of its proper divisors (20234506).

20313344 is an frugal number, since it uses more digits than its factorization.

20313344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79365 (or 79351 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20313344 is about 4507.0327267505. The cubic root of 20313344 is about 272.8519997308.

Adding to 20313344 its reverse (44331302), we get a palindrome (64644646).

The spelling of 20313344 in words is "twenty million, three hundred thirteen thousand, three hundred forty-four".