181403243 has 12 divisors (see below), whose sum is σ = 223434072. Its totient is φ = 146341440.

The previous prime is 181403213. The next prime is 181403263. The reversal of 181403243 is 342304181.

It is not a de Polignac number, because 181403243 - 2⁸ = 181402987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181403213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108053 + ... + 109718.

It is an arithmetic number, because the mean of its divisors is an integer number (18619506).

Almost surely, 2^181403243 is an apocalyptic number.

181403243 is a deficient number, since it is larger than the sum of its proper divisors (42030829).

181403243 is a wasteful number, since it uses less digits than its factorization.

181403243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217802 (or 217795 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 181403243 is about 13468.6021175176. The cubic root of 181403243 is about 566.0850457180.

The spelling of 181403243 in words is "one hundred eighty-one million, four hundred three thousand, two hundred forty-three".