20712313 has 8 divisors (see below), whose sum is σ = 21244832. Its totient is φ = 20186496.

The previous prime is 20712301. The next prime is 20712323. The reversal of 20712313 is 31321702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20712313 - 2⁵ = 20712281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20712323) 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 7 ways as a sum of consecutive naturals, for example, 4906 + ... + 8092.

It is an arithmetic number, because the mean of its divisors is an integer number (2655604).

Almost surely, 2^20712313 is an apocalyptic number.

It is an amenable number.

20712313 is a deficient number, since it is larger than the sum of its proper divisors (532519).

20712313 is an equidigital number, since it uses as much as digits as its factorization.

20712313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 20712313 is about 4551.0782238938. The cubic root of 20712313 is about 274.6267686088.

It can be divided in two parts, 20712 and 313, that added together give a square (21025 = 145²).

The spelling of 20712313 in words is "twenty million, seven hundred twelve thousand, three hundred thirteen".