40342431023 has 2 divisors, whose sum is σ = 40342431024. Its totient is φ = 40342431022.

The previous prime is 40342431013. The next prime is 40342431097. The reversal of 40342431023 is 32013424304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40342431023 - 2⁴ = 40342431007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40342430983 and 40342431001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40342431013) 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 as a sum of consecutive naturals, namely, 20171215511 + 20171215512.

It is an arithmetic number, because the mean of its divisors is an integer number (20171215512).

Almost surely, 2^40342431023 is an apocalyptic number.

40342431023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40342431023 is an equidigital number, since it uses as much as digits as its factorization.

40342431023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40342431023 its reverse (32013424304), we get a palindrome (72355855327).

The spelling of 40342431023 in words is "forty billion, three hundred forty-two million, four hundred thirty-one thousand, twenty-three".