40323440143 has 4 divisors (see below), whose sum is σ = 46083931600. Its totient is φ = 34562948688.

The previous prime is 40323440141. The next prime is 40323440153. The reversal of 40323440143 is 34104432304.

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 40323440143 - 2¹ = 40323440141 is a prime.

It is a super-2 number, since 2×40323440143² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40323440141) 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, 2880245718 + ... + 2880245731.

It is an arithmetic number, because the mean of its divisors is an integer number (11520982900).

Almost surely, 2^40323440143 is an apocalyptic number.

40323440143 is a deficient number, since it is larger than the sum of its proper divisors (5760491457).

40323440143 is an equidigital number, since it uses as much as digits as its factorization.

40323440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760491456.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40323440143 its reverse (34104432304), we get a palindrome (74427872447).

The spelling of 40323440143 in words is "forty billion, three hundred twenty-three million, four hundred forty thousand, one hundred forty-three".