20793313 has 2 divisors, whose sum is σ = 20793314. Its totient is φ = 20793312.

The previous prime is 20793307. The next prime is 20793323. The reversal of 20793313 is 31339702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 63504 = 4553^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 20793313 - 2¹⁷ = 20662241 is a prime.

It is not a weakly prime, because it can be changed into another prime (20793323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10396656 + 10396657.

It is an arithmetic number, because the mean of its divisors is an integer number (10396657).

Almost surely, 2^20793313 is an apocalyptic number.

It is an amenable number.

20793313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20793313 is an equidigital number, since it uses as much as digits as its factorization.

20793313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 20793313 is about 4559.9685305932. The cubic root of 20793313 is about 274.9842988281.

The spelling of 20793313 in words is "twenty million, seven hundred ninety-three thousand, three hundred thirteen".