40231220212243 has 4 divisors (see below), whose sum is σ = 40520653451320. Its totient is φ = 39941786973168.

The previous prime is 40231220212241. The next prime is 40231220212283. The reversal of 40231220212243 is 34221202213204.

40231220212243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40231220212243 - 2¹ = 40231220212241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40231220212241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144716619330 + ... + 144716619607.

It is an arithmetic number, because the mean of its divisors is an integer number (10130163362830).

Almost surely, 2^{40231220212243} is an apocalyptic number.

40231220212243 is a deficient number, since it is larger than the sum of its proper divisors (289433239077).

40231220212243 is a wasteful number, since it uses less digits than its factorization.

40231220212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289433239076.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40231220212243 its reverse (34221202213204), we get a palindrome (74452422425447).

The spelling of 40231220212243 in words is "forty trillion, two hundred thirty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred forty-three".