91143371 has 12 divisors (see below), whose sum is σ = 100615032. Its totient is φ = 82500000.

The previous prime is 91143343. The next prime is 91143373. The reversal of 91143371 is 17334119.

It is a happy number.

It is not a de Polignac number, because 91143371 - 2¹⁸ = 90881227 is a prime.

It is a super-2 number, since 2×91143371² = 16614228154487282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91143373) 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 11 ways as a sum of consecutive naturals, for example, 28871 + ... + 31871.

It is an arithmetic number, because the mean of its divisors is an integer number (8384586).

Almost surely, 2^91143371 is an apocalyptic number.

91143371 is a deficient number, since it is larger than the sum of its proper divisors (9471661).

91143371 is a wasteful number, since it uses less digits than its factorization.

91143371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274 (or 3263 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 91143371 is about 9546.9037389093. The cubic root of 91143371 is about 450.0302382973.

The spelling of 91143371 in words is "ninety-one million, one hundred forty-three thousand, three hundred seventy-one".