2103973 has 2 divisors, whose sum is σ = 2103974. Its totient is φ = 2103972.

The previous prime is 2103961. The next prime is 2103977. The reversal of 2103973 is 3793012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216609 + 887364 = 1103^2 + 942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103973 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 0 + 3⁵ + 9 + 7 + 3⁸ .

2103973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051986 + 1051987.

It is an arithmetic number, because the mean of its divisors is an integer number (1051987).

2^2103973 is an apocalyptic number.

It is an amenable number.

2103973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103973 is an equidigital number, since it uses as much as digits as its factorization.

2103973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 2103973 is about 1450.5078421022. The cubic root of 2103973 is about 128.1386234175.

Adding to 2103973 its reverse (3793012), we get a palindrome (5896985).

It can be divided in two parts, 21039 and 73, that added together give a palindrome (21112).

The spelling of 2103973 in words is "two million, one hundred three thousand, nine hundred seventy-three".