91103127 has 4 divisors (see below), whose sum is σ = 121470840. Its totient is φ = 60735416.

The previous prime is 91103113. The next prime is 91103143. The reversal of 91103127 is 72130119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72130119 = 3 ⋅24043373.

It is a cyclic number.

It is not a de Polignac number, because 91103127 - 2¹² = 91099031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91103097 and 91103106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15183852 + ... + 15183857.

It is an arithmetic number, because the mean of its divisors is an integer number (30367710).

Almost surely, 2^91103127 is an apocalyptic number.

91103127 is a deficient number, since it is larger than the sum of its proper divisors (30367713).

91103127 is a wasteful number, since it uses less digits than its factorization.

91103127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30367712.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 91103127 is about 9544.7958071401. The cubic root of 91103127 is about 449.9639921806.

The spelling of 91103127 in words is "ninety-one million, one hundred three thousand, one hundred twenty-seven".