20411313 has 24 divisors (see below), whose sum is σ = 29795328. Its totient is φ = 12422592.

The previous prime is 20411291. The next prime is 20411323. The reversal of 20411313 is 31311402.

It is not a de Polignac number, because 20411313 - 2⁶ = 20411249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20411292 and 20411301.

It is not an unprimeable number, because it can be changed into a prime (20411323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64231 + ... + 64547.

It is an arithmetic number, because the mean of its divisors is an integer number (1241472).

Almost surely, 2^20411313 is an apocalyptic number.

It is an amenable number.

20411313 is a deficient number, since it is larger than the sum of its proper divisors (9384015).

20411313 is a wasteful number, since it uses less digits than its factorization.

20411313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20411313 is about 4517.8881128244. Note that the first 3 decimals coincide. The cubic root of 20411313 is about 273.2899413900.

Adding to 20411313 its reverse (31311402), we get a palindrome (51722715).

The spelling of 20411313 in words is "twenty million, four hundred eleven thousand, three hundred thirteen".