20335313 has 2 divisors, whose sum is σ = 20335314. Its totient is φ = 20335312.

The previous prime is 20335279. The next prime is 20335319. The reversal of 20335313 is 31353302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19775809 + 559504 = 4447^2 + 748^2 .

It is a cyclic number.

It is not a de Polignac number, because 20335313 - 2¹⁸ = 20073169 is a prime.

It is not a weakly prime, because it can be changed into another prime (20335319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167656 + 10167657.

It is an arithmetic number, because the mean of its divisors is an integer number (10167657).

Almost surely, 2^20335313 is an apocalyptic number.

It is an amenable number.

20335313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335313 is an equidigital number, since it uses as much as digits as its factorization.

20335313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 20335313 is about 4509.4692592366. The cubic root of 20335313 is about 272.9503279681.

Adding to 20335313 its reverse (31353302), we get a palindrome (51688615).

The spelling of 20335313 in words is "twenty million, three hundred thirty-five thousand, three hundred thirteen".