431402144020 has 12 divisors (see below), whose sum is σ = 905944502484. Its totient is φ = 172560857600.

The previous prime is 431402144009. The next prime is 431402144021. The reversal of 431402144020 is 20441204134.

It can be written as a sum of positive squares in 2 ways, for example, as 55562032656 + 375840111364 = 235716^2 + 613058^2 .

It is a super-2 number, since 2×431402144020² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431402144021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10785053581 + ... + 10785053620.

It is an arithmetic number, because the mean of its divisors is an integer number (75495375207).

Almost surely, 2^431402144020 is an apocalyptic number.

It is an amenable number.

431402144020 is an abundant number, since it is smaller than the sum of its proper divisors (474542358464).

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

431402144020 is a wasteful number, since it uses less digits than its factorization.

431402144020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570107210 (or 21570107208 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 431402144020 its reverse (20441204134), we get a palindrome (451843348154).

The spelling of 431402144020 in words is "four hundred thirty-one billion, four hundred two million, one hundred forty-four thousand, twenty".