2103987312 has 280 divisors, whose sum is σ = 7100792544. Its totient is φ = 591224832.

The previous prime is 2103987293. The next prime is 2103987313. The reversal of 2103987312 is 2137893012.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103987313) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5960128 + ... + 5960480.

Almost surely, 2^2103987312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103987312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3550396272).

2103987312 is an abundant number, since it is smaller than the sum of its proper divisors (4996805232).

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

2103987312 is an equidigital number, since it uses as much as digits as its factorization.

2103987312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2103987312 is about 45869.2414587379. The cubic root of 2103987312 is about 1281.3891396559.

The spelling of 2103987312 in words is "two billion, one hundred three million, nine hundred eighty-seven thousand, three hundred twelve".