20103697 has 2 divisors, whose sum is σ = 20103698. Its totient is φ = 20103696.

The previous prime is 20103667. The next prime is 20103701. The reversal of 20103697 is 79630102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 24336 = 4481^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103697 - 2²³ = 11715089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20103607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051848 + 10051849.

It is an arithmetic number, because the mean of its divisors is an integer number (10051849).

Almost surely, 2^20103697 is an apocalyptic number.

It is an amenable number.

20103697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103697 is an equidigital number, since it uses as much as digits as its factorization.

20103697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20103697 is about 4483.7146430164. The cubic root of 20103697 is about 271.9100814730.

Adding to 20103697 its reverse (79630102), we get a palindrome (99733799).

The spelling of 20103697 in words is "twenty million, one hundred three thousand, six hundred ninety-seven".