431065229540 has 192 divisors, whose sum is σ = 1100373120000. Its totient is φ = 140044101120.

The previous prime is 431065229509. The next prime is 431065229549. The reversal of 431065229540 is 45922560134.

It is a super-2 number, since 2×431065229540² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431065229549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5171111 + ... + 5253809.

It is an arithmetic number, because the mean of its divisors is an integer number (5731110000).

Almost surely, 2^431065229540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431065229540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550186560000).

431065229540 is an abundant number, since it is smaller than the sum of its proper divisors (669307890460).

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

431065229540 is a wasteful number, since it uses less digits than its factorization.

431065229540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82810 (or 82808 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 431065229540 its reverse (45922560134), we get a palindrome (476987789674).

The spelling of 431065229540 in words is "four hundred thirty-one billion, sixty-five million, two hundred twenty-nine thousand, five hundred forty".