187113103 has 4 divisors (see below), whose sum is σ = 187172640. Its totient is φ = 187053568.

The previous prime is 187113077. The next prime is 187113127. The reversal of 187113103 is 301311781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187113103 is a prime.

It is a super-2 number, since 2×187113103² = 70022626628577218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187113163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24775 + ... + 31432.

It is an arithmetic number, because the mean of its divisors is an integer number (46793160).

Almost surely, 2^187113103 is an apocalyptic number.

187113103 is a deficient number, since it is larger than the sum of its proper divisors (59537).

187113103 is an equidigital number, since it uses as much as digits as its factorization.

187113103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59536.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 187113103 is about 13678.9291613050. The cubic root of 187113103 is about 571.9631732937.

Adding to 187113103 its reverse (301311781), we get a palindrome (488424884).

The spelling of 187113103 in words is "one hundred eighty-seven million, one hundred thirteen thousand, one hundred three".