431422323021 has 6 divisors (see below), whose sum is σ = 623165577710. Its totient is φ = 287614882008.

The previous prime is 431422323001. The next prime is 431422323089. The reversal of 431422323021 is 120323224134.

431422323021 is a `hidden beast` number, since 4 + 3 + 1 + 422 + 3 + 230 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 226585520100 + 204836802921 = 476010^2 + 452589^2 .

It is not a de Polignac number, because 431422323021 - 2²¹ = 431420225869 is a prime.

It is a super-2 number, since 2×431422323021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431422323001) 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 in 5 ways as a sum of consecutive naturals, for example, 23967906826 + ... + 23967906843.

Almost surely, 2^431422323021 is an apocalyptic number.

It is an amenable number.

431422323021 is a deficient number, since it is larger than the sum of its proper divisors (191743254689).

431422323021 is a wasteful number, since it uses less digits than its factorization.

431422323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47935813675 (or 47935813672 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 431422323021 its reverse (120323224134), we get a palindrome (551745547155).

The spelling of 431422323021 in words is "four hundred thirty-one billion, four hundred twenty-two million, three hundred twenty-three thousand, twenty-one".