40042202231 has 2 divisors, whose sum is σ = 40042202232. Its totient is φ = 40042202230.

The previous prime is 40042202191. The next prime is 40042202243. The reversal of 40042202231 is 13220224004.

40042202231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40042202231 - 2¹⁰ = 40042201207 is a prime.

It is a super-2 number, since 2×40042202231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40042202531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021101115 + 20021101116.

It is an arithmetic number, because the mean of its divisors is an integer number (20021101116).

Almost surely, 2^40042202231 is an apocalyptic number.

40042202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042202231 is an equidigital number, since it uses as much as digits as its factorization.

40042202231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40042202231 its reverse (13220224004), we get a palindrome (53262426235).

The spelling of 40042202231 in words is "forty billion, forty-two million, two hundred two thousand, two hundred thirty-one".