423421043431 has 2 divisors, whose sum is σ = 423421043432. Its totient is φ = 423421043430.

The previous prime is 423421043407. The next prime is 423421043453. The reversal of 423421043431 is 134340124324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423421043431 - 2⁵ = 423421043399 is a prime.

It is a super-2 number, since 2×423421043431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423421043393 and 423421043402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423421043471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211710521715 + 211710521716.

It is an arithmetic number, because the mean of its divisors is an integer number (211710521716).

Almost surely, 2^423421043431 is an apocalyptic number.

423421043431 is a deficient number, since it is larger than the sum of its proper divisors (1).

423421043431 is an equidigital number, since it uses as much as digits as its factorization.

423421043431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 423421043431 its reverse (134340124324), we get a palindrome (557761167755).

The spelling of 423421043431 in words is "four hundred twenty-three billion, four hundred twenty-one million, forty-three thousand, four hundred thirty-one".