103157191 has 2 divisors, whose sum is σ = 103157192. Its totient is φ = 103157190.

The previous prime is 103157183. The next prime is 103157203. The reversal of 103157191 is 191751301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103157191 - 2³ = 103157183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103157111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51578595 + 51578596.

It is an arithmetic number, because the mean of its divisors is an integer number (51578596).

Almost surely, 2^103157191 is an apocalyptic number.

103157191 is a deficient number, since it is larger than the sum of its proper divisors (1).

103157191 is an equidigital number, since it uses as much as digits as its factorization.

103157191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 103157191 is about 10156.6328573991. The cubic root of 103157191 is about 468.9931532318.

The spelling of 103157191 in words is "one hundred three million, one hundred fifty-seven thousand, one hundred ninety-one".