47181223 has 4 divisors (see below), whose sum is σ = 47369448. Its totient is φ = 46993000.

The previous prime is 47181221. The next prime is 47181227. The reversal of 47181223 is 32218174.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47181223 - 2¹ = 47181221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47181191 and 47181200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47181221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93736 + ... + 94237.

It is an arithmetic number, because the mean of its divisors is an integer number (11842362).

Almost surely, 2^47181223 is an apocalyptic number.

47181223 is a deficient number, since it is larger than the sum of its proper divisors (188225).

47181223 is a wasteful number, since it uses less digits than its factorization.

47181223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188224.

The product of its digits is 2688, while the sum is 28.

The square root of 47181223 is about 6868.8589299825. The cubic root of 47181223 is about 361.3458445497.

Adding to 47181223 its reverse (32218174), we get a palindrome (79399397).

The spelling of 47181223 in words is "forty-seven million, one hundred eighty-one thousand, two hundred twenty-three".