431443342420 has 12 divisors (see below), whose sum is σ = 906031019124. Its totient is φ = 172577336960.

The previous prime is 431443342411. The next prime is 431443342481. The reversal of 431443342420 is 24243344134.

It can be written as a sum of positive squares in 2 ways, for example, as 44006809284 + 387436533136 = 209778^2 + 622444^2 .

It is a super-2 number, since 2×431443342420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 10786083541 + ... + 10786083580.

It is an arithmetic number, because the mean of its divisors is an integer number (75502584927).

Almost surely, 2^431443342420 is an apocalyptic number.

It is an amenable number.

431443342420 is an abundant number, since it is smaller than the sum of its proper divisors (474587676704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431443342420 is a wasteful number, since it uses less digits than its factorization.

431443342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572167130 (or 21572167128 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 431443342420 its reverse (24243344134), we get a palindrome (455686686554).

The spelling of 431443342420 in words is "four hundred thirty-one billion, four hundred forty-three million, three hundred forty-two thousand, four hundred twenty".