40220243323 has 4 divisors (see below), whose sum is σ = 43314108208. Its totient is φ = 37126378440.

The previous prime is 40220243291. The next prime is 40220243333. The reversal of 40220243323 is 32334202204.

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 40220243323 - 2⁵ = 40220243291 is a prime.

It is a super-2 number, since 2×40220243323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40220243333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1546932423 + ... + 1546932448.

It is an arithmetic number, because the mean of its divisors is an integer number (10828527052).

Almost surely, 2^40220243323 is an apocalyptic number.

40220243323 is a deficient number, since it is larger than the sum of its proper divisors (3093864885).

40220243323 is a wasteful number, since it uses less digits than its factorization.

40220243323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093864884.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 40220243323 its reverse (32334202204), we get a palindrome (72554445527).

The spelling of 40220243323 in words is "forty billion, two hundred twenty million, two hundred forty-three thousand, three hundred twenty-three".