20023313 has 2 divisors, whose sum is σ = 20023314. Its totient is φ = 20023312.

The previous prime is 20023307. The next prime is 20023343. The reversal of 20023313 is 31332002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 380689 = 4432^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023313 - 2⁸ = 20023057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20023343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011656 + 10011657.

It is an arithmetic number, because the mean of its divisors is an integer number (10011657).

Almost surely, 2^20023313 is an apocalyptic number.

It is an amenable number.

20023313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023313 is an equidigital number, since it uses as much as digits as its factorization.

20023313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20023313 is about 4474.7416685212. The cubic root of 20023313 is about 271.5471894026.

Adding to 20023313 its reverse (31332002), we get a palindrome (51355315).

The spelling of 20023313 in words is "twenty million, twenty-three thousand, three hundred thirteen".