20462317 has 2 divisors, whose sum is σ = 20462318. Its totient is φ = 20462316.

The previous prime is 20462227. The next prime is 20462327. The reversal of 20462317 is 71326402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10407076 + 10055241 = 3226^2 + 3171^2 .

It is a cyclic number.

It is not a de Polignac number, because 20462317 - 2¹⁹ = 19938029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20462291 and 20462300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20462327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231158 + 10231159.

It is an arithmetic number, because the mean of its divisors is an integer number (10231159).

Almost surely, 2^20462317 is an apocalyptic number.

It is an amenable number.

20462317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20462317 is an equidigital number, since it uses as much as digits as its factorization.

20462317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20462317 is about 4523.5292637497. The cubic root of 20462317 is about 273.5173852926.

Adding to 20462317 its reverse (71326402), we get a palindrome (91788719).

The spelling of 20462317 in words is "twenty million, four hundred sixty-two thousand, three hundred seventeen".