2103451205 has 4 divisors (see below), whose sum is σ = 2524141452. Its totient is φ = 1682760960.

The previous prime is 2103451199. The next prime is 2103451211. The reversal of 2103451205 is 5021543012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2103451199) and next prime (2103451211).

It can be written as a sum of positive squares in 2 ways, for example, as 791128129 + 1312323076 = 28127^2 + 36226^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2103451205 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210345116 + ... + 210345125.

It is an arithmetic number, because the mean of its divisors is an integer number (631035363).

Almost surely, 2^2103451205 is an apocalyptic number.

It is an amenable number.

2103451205 is a deficient number, since it is larger than the sum of its proper divisors (420690247).

2103451205 is an equidigital number, since it uses as much as digits as its factorization.

2103451205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420690246.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2103451205 is about 45863.3972248023. The cubic root of 2103451205 is about 1281.2802955200.

Adding to 2103451205 its reverse (5021543012), we get a palindrome (7124994217).

The spelling of 2103451205 in words is "two billion, one hundred three million, four hundred fifty-one thousand, two hundred five".