103113191 has 4 divisors (see below), whose sum is σ = 105900072. Its totient is φ = 100326312.

The previous prime is 103113169. The next prime is 103113203. The reversal of 103113191 is 191311301.

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-103113191 is a prime.

It is a super-3 number, since 3×103113191³ (a number of 25 digits) contains 333 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 (103113391) 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, 1393385 + ... + 1393458.

It is an arithmetic number, because the mean of its divisors is an integer number (26475018).

Almost surely, 2^103113191 is an apocalyptic number.

103113191 is a deficient number, since it is larger than the sum of its proper divisors (2786881).

103113191 is an equidigital number, since it uses as much as digits as its factorization.

103113191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786880.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 103113191 is about 10154.4665541820. The cubic root of 103113191 is about 468.9264633152.

Adding to 103113191 its reverse (191311301), we get a palindrome (294424492).

The spelling of 103113191 in words is "one hundred three million, one hundred thirteen thousand, one hundred ninety-one".