420311234321423 has 16 divisors (see below), whose sum is σ = 420810934340160. Its totient is φ = 419811919220736.

The previous prime is 420311234321393. The next prime is 420311234321471. The reversal of 420311234321423 is 324123432113024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420311234321423 - 2¹⁸ = 420311234059279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420311234321123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22728116765 + ... + 22728135257.

It is an arithmetic number, because the mean of its divisors is an integer number (26300683396260).

Almost surely, 2^{420311234321423} is an apocalyptic number.

420311234321423 is a deficient number, since it is larger than the sum of its proper divisors (499700018737).

420311234321423 is a wasteful number, since it uses less digits than its factorization.

420311234321423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27506.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 420311234321423 its reverse (324123432113024), we get a palindrome (744434666434447).

The spelling of 420311234321423 in words is "four hundred twenty trillion, three hundred eleven billion, two hundred thirty-four million, three hundred twenty-one thousand, four hundred twenty-three".