2103502109 has 2 divisors, whose sum is σ = 2103502110. Its totient is φ = 2103502108.

The previous prime is 2103502091. The next prime is 2103502129. The reversal of 2103502109 is 9012053012.

Together with previous prime (2103502091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1476250084 + 627252025 = 38422^2 + 25045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103502109 - 2²⁰ = 2102453533 is a prime.

It is a super-2 number, since 2×2103502109² = 8849442245134895762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103502129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051751054 + 1051751055.

It is an arithmetic number, because the mean of its divisors is an integer number (1051751055).

Almost surely, 2^2103502109 is an apocalyptic number.

It is an amenable number.

2103502109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103502109 is an equidigital number, since it uses as much as digits as its factorization.

2103502109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 2103502109 is about 45863.9521737933. The cubic root of 2103502109 is about 1281.2906311953.

The spelling of 2103502109 in words is "two billion, one hundred three million, five hundred two thousand, one hundred nine".