91036143 has 40 divisors (see below), whose sum is σ = 150264576. Its totient is φ = 54464400.

The previous prime is 91036123. The next prime is 91036157. The reversal of 91036143 is 34163019.

It is not a de Polignac number, because 91036143 - 2⁵ = 91036111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91036103) 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 39 ways as a sum of consecutive naturals, for example, 73338 + ... + 74568.

Almost surely, 2^91036143 is an apocalyptic number.

91036143 is a deficient number, since it is larger than the sum of its proper divisors (59228433).

91036143 is a wasteful number, since it uses less digits than its factorization.

91036143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 91036143 is about 9541.2862340462. The cubic root of 91036143 is about 449.8536857655.

The spelling of 91036143 in words is "ninety-one million, thirty-six thousand, one hundred forty-three".