431420040323 has 4 divisors (see below), whose sum is σ = 431672482080. Its totient is φ = 431167598568.

The previous prime is 431420040263. The next prime is 431420040329. The reversal of 431420040323 is 323040024134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431420040323 is a prime.

It is a super-2 number, since 2×431420040323² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431420040292 and 431420040301.

It is not an unprimeable number, because it can be changed into a prime (431420040329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126218315 + ... + 126221732.

It is an arithmetic number, because the mean of its divisors is an integer number (107918120520).

Almost surely, 2^431420040323 is an apocalyptic number.

431420040323 is a deficient number, since it is larger than the sum of its proper divisors (252441757).

431420040323 is a wasteful number, since it uses less digits than its factorization.

431420040323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252441756.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 431420040323 its reverse (323040024134), we get a palindrome (754460064457).

The spelling of 431420040323 in words is "four hundred thirty-one billion, four hundred twenty million, forty thousand, three hundred twenty-three".