81110349 has 16 divisors (see below), whose sum is σ = 127232640. Its totient is φ = 50892480.

The previous prime is 81110317. The next prime is 81110357. The reversal of 81110349 is 94301118.

It is not a de Polignac number, because 81110349 - 2⁵ = 81110317 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 (81110389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87897 + ... + 88814.

It is an arithmetic number, because the mean of its divisors is an integer number (7952040).

Almost surely, 2^81110349 is an apocalyptic number.

It is an amenable number.

81110349 is a deficient number, since it is larger than the sum of its proper divisors (46122291).

81110349 is a wasteful number, since it uses less digits than its factorization.

81110349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176737 (or 176731 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 81110349 is about 9006.1284134749. The cubic root of 81110349 is about 432.8712644013.

The spelling of 81110349 in words is "eighty-one million, one hundred ten thousand, three hundred forty-nine".