103155191 has 4 divisors (see below), whose sum is σ = 103202472. Its totient is φ = 103107912.

The previous prime is 103155181. The next prime is 103155203. The reversal of 103155191 is 191551301.

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

It is a cyclic number.

It is not a de Polignac number, because 103155191 - 2¹⁰ = 103154167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103155191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103155121) 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, 20201 + ... + 24786.

It is an arithmetic number, because the mean of its divisors is an integer number (25800618).

Almost surely, 2^103155191 is an apocalyptic number.

103155191 is a deficient number, since it is larger than the sum of its proper divisors (47281).

103155191 is an equidigital number, since it uses as much as digits as its factorization.

103155191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47280.

The product of its (nonzero) digits is 675, while the sum is 26.

The square root of 103155191 is about 10156.5343990950. The cubic root of 103155191 is about 468.9901222834.

The spelling of 103155191 in words is "one hundred three million, one hundred fifty-five thousand, one hundred ninety-one".