20711313 has 24 divisors (see below), whose sum is σ = 34310016. Its totient is φ = 11793600.

The previous prime is 20711303. The next prime is 20711329. The reversal of 20711313 is 31311702.

It is not a de Polignac number, because 20711313 - 2⁴ = 20711297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20711303) 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 in 23 ways as a sum of consecutive naturals, for example, 32508 + ... + 33138.

It is an arithmetic number, because the mean of its divisors is an integer number (1429584).

Almost surely, 2^20711313 is an apocalyptic number.

It is an amenable number.

20711313 is a deficient number, since it is larger than the sum of its proper divisors (13598703).

20711313 is a wasteful number, since it uses less digits than its factorization.

20711313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 20711313 is about 4550.9683584925. The cubic root of 20711313 is about 274.6223488354.

The spelling of 20711313 in words is "twenty million, seven hundred eleven thousand, three hundred thirteen".