181306104 has 96 divisors (see below), whose sum is σ = 535743360. Its totient is φ = 50086080.

The previous prime is 181306093. The next prime is 181306109. The reversal of 181306104 is 401603181.

181306104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181306109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160887 + ... + 162009.

It is an arithmetic number, because the mean of its divisors is an integer number (5580660).

Almost surely, 2^181306104 is an apocalyptic number.

181306104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181306104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267871680).

181306104 is an abundant number, since it is smaller than the sum of its proper divisors (354437256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181306104 is a wasteful number, since it uses less digits than its factorization.

181306104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 181306104 is about 13464.9955068689. The cubic root of 181306104 is about 565.9839840307.

Adding to 181306104 its reverse (401603181), we get a palindrome (582909285).

The spelling of 181306104 in words is "one hundred eighty-one million, three hundred six thousand, one hundred four".