2103515340 has 96 divisors (see below), whose sum is σ = 5963702976. Its totient is φ = 553943040.

The previous prime is 2103515329. The next prime is 2103515341. The reversal of 2103515340 is 435153012.

It is a self number, because there is not a number n which added to its sum of digits gives 2103515340.

It is not an unprimeable number, because it can be changed into a prime (2103515341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3125244 + ... + 3125916.

It is an arithmetic number, because the mean of its divisors is an integer number (62121906).

Almost surely, 2^2103515340 is an apocalyptic number.

2103515340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103515340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2981851488).

2103515340 is an abundant number, since it is smaller than the sum of its proper divisors (3860187636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2103515340 is a wasteful number, since it uses less digits than its factorization.

2103515340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2103515340 is about 45864.0964153879. The cubic root of 2103515340 is about 1281.2933176233.

Adding to 2103515340 its reverse (435153012), we get a palindrome (2538668352).

The spelling of 2103515340 in words is "two billion, one hundred three million, five hundred fifteen thousand, three hundred forty".