40423431343 has 2 divisors, whose sum is σ = 40423431344. Its totient is φ = 40423431342.

The previous prime is 40423431311. The next prime is 40423431407. The reversal of 40423431343 is 34313432404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40423431343 - 2⁵ = 40423431311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40423431143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211715671 + 20211715672.

It is an arithmetic number, because the mean of its divisors is an integer number (20211715672).

Almost surely, 2^40423431343 is an apocalyptic number.

40423431343 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423431343 is an equidigital number, since it uses as much as digits as its factorization.

40423431343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 40423431343 its reverse (34313432404), we get a palindrome (74736863747).

The spelling of 40423431343 in words is "forty billion, four hundred twenty-three million, four hundred thirty-one thousand, three hundred forty-three".