2113103187 has 32 divisors (see below), whose sum is σ = 3417556800. Its totient is φ = 1282542336.

The previous prime is 2113103171. The next prime is 2113103243. The reversal of 2113103187 is 7813013112.

It is a happy number.

It is not a de Polignac number, because 2113103187 - 2⁴ = 2113103171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2113103187.

It is not an unprimeable number, because it can be changed into a prime (2113103147) 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, 15612 + ... + 66857.

It is an arithmetic number, because the mean of its divisors is an integer number (106798650).

Almost surely, 2^2113103187 is an apocalyptic number.

2113103187 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2113103187 is a deficient number, since it is larger than the sum of its proper divisors (1304453613).

2113103187 is a wasteful number, since it uses less digits than its factorization.

2113103187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82564 (or 82558 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 2113103187 is about 45968.5021182984. The cubic root of 2113103187 is about 1283.2370839080.

Adding to 2113103187 its reverse (7813013112), we get a palindrome (9926116299).

The spelling of 2113103187 in words is "two billion, one hundred thirteen million, one hundred three thousand, one hundred eighty-seven".