20351101 has 2 divisors, whose sum is σ = 20351102. Its totient is φ = 20351100.

The previous prime is 20351087. The next prime is 20351117. The reversal of 20351101 is 10115302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18071001 + 2280100 = 4251^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 20351101 - 2¹⁹ = 19826813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20351131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175550 + 10175551.

It is an arithmetic number, because the mean of its divisors is an integer number (10175551).

Almost surely, 2^20351101 is an apocalyptic number.

It is an amenable number.

20351101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20351101 is an equidigital number, since it uses as much as digits as its factorization.

20351101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 20351101 is about 4511.2194581953. The cubic root of 20351101 is about 273.0209477322.

Adding to 20351101 its reverse (10115302), we get a palindrome (30466403).

It can be divided in two parts, 2035 and 1101, that added together give a square (3136 = 56²).

The spelling of 20351101 in words is "twenty million, three hundred fifty-one thousand, one hundred one".