20243313 has 24 divisors (see below), whose sum is σ = 30232800. Its totient is φ = 13045824.

The previous prime is 20243309. The next prime is 20243339. The reversal of 20243313 is 31334202.

It is not a de Polignac number, because 20243313 - 2² = 20243309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20243383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35293 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (1259700).

Almost surely, 2^20243313 is an apocalyptic number.

It is an amenable number.

20243313 is a deficient number, since it is larger than the sum of its proper divisors (9989487).

20243313 is a wasteful number, since it uses less digits than its factorization.

20243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20243313 is about 4499.2569386511. The cubic root of 20243313 is about 272.5380829417.

Adding to 20243313 its reverse (31334202), we get a palindrome (51577515).

The spelling of 20243313 in words is "twenty million, two hundred forty-three thousand, three hundred thirteen".