40113223 has 4 divisors (see below), whose sum is σ = 40139008. Its totient is φ = 40087440.

The previous prime is 40113221. The next prime is 40113253. The reversal of 40113223 is 32231104.

It is a happy number.

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 40113223 - 2¹ = 40113221 is a prime.

It is the 6334-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40113197 and 40113206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40113221) by changing a digit.

It is a nontrivial repunit in base 6333.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10398 + ... + 13723.

It is an arithmetic number, because the mean of its divisors is an integer number (10034752).

Almost surely, 2^40113223 is an apocalyptic number.

40113223 is a deficient number, since it is larger than the sum of its proper divisors (25785).

40113223 is a wasteful number, since it uses less digits than its factorization.

40113223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25784.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40113223 is about 6333.5000592090. The cubic root of 40113223 is about 342.3175663666.

Adding to 40113223 its reverse (32231104), we get a palindrome (72344327).

The spelling of 40113223 in words is "forty million, one hundred thirteen thousand, two hundred twenty-three".