431323551423 has 16 divisors (see below), whose sum is σ = 639061768800. Its totient is φ = 287520272640.

The previous prime is 431323551409. The next prime is 431323551443. The reversal of 431323551423 is 324155323134.

431323551423 is a `hidden beast` number, since 4 + 3 + 132 + 3 + 5 + 514 + 2 + 3 = 666.

It is not a de Polignac number, because 431323551423 - 2³⁸ = 156445644479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431323551403) 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, 522258 + ... + 1065551.

It is an arithmetic number, because the mean of its divisors is an integer number (39941360550).

Almost surely, 2^431323551423 is an apocalyptic number.

431323551423 is a deficient number, since it is larger than the sum of its proper divisors (207738217377).

431323551423 is a wasteful number, since it uses less digits than its factorization.

431323551423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597879 (or 1597873 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 431323551423 its reverse (324155323134), we get a palindrome (755478874557).

The spelling of 431323551423 in words is "four hundred thirty-one billion, three hundred twenty-three million, five hundred fifty-one thousand, four hundred twenty-three".