423170511623 has 2 divisors, whose sum is σ = 423170511624. Its totient is φ = 423170511622.

The previous prime is 423170511523. The next prime is 423170511641. The reversal of 423170511623 is 326115071324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423170511623 - 2¹⁶ = 423170446087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423170511523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211585255811 + 211585255812.

It is an arithmetic number, because the mean of its divisors is an integer number (211585255812).

Almost surely, 2^423170511623 is an apocalyptic number.

423170511623 is a deficient number, since it is larger than the sum of its proper divisors (1).

423170511623 is an equidigital number, since it uses as much as digits as its factorization.

423170511623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 423170511623 its reverse (326115071324), we get a palindrome (749285582947).

The spelling of 423170511623 in words is "four hundred twenty-three billion, one hundred seventy million, five hundred eleven thousand, six hundred twenty-three".