40223431121 has 4 divisors (see below), whose sum is σ = 40227170100. Its totient is φ = 40219692144.

The previous prime is 40223431117. The next prime is 40223431151. The reversal of 40223431121 is 12113432204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28751950096 + 11471481025 = 169564^2 + 107105^2 .

It is a cyclic number.

It is not a de Polignac number, because 40223431121 - 2² = 40223431117 is a prime.

It is a super-3 number, since 3×40223431121³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40223431151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853306 + ... + 1874883.

It is an arithmetic number, because the mean of its divisors is an integer number (10056792525).

Almost surely, 2^40223431121 is an apocalyptic number.

It is an amenable number.

40223431121 is a deficient number, since it is larger than the sum of its proper divisors (3738979).

40223431121 is a wasteful number, since it uses less digits than its factorization.

40223431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738978.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 40223431121 its reverse (12113432204), we get a palindrome (52336863325).

The spelling of 40223431121 in words is "forty billion, two hundred twenty-three million, four hundred thirty-one thousand, one hundred twenty-one".