43431011013432 has 256 divisors, whose sum is σ = 128526920294400. Its totient is φ = 11967805440000.

The previous prime is 43431011013407. The next prime is 43431011013457. The reversal of 43431011013432 is 23431011013434.

It is an interprime number because it is at equal distance from previous prime (43431011013407) and next prime (43431011013457).

It is a self number, because there is not a number n which added to its sum of digits gives 43431011013432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2466401044 + ... + 2466418652.

It is an arithmetic number, because the mean of its divisors is an integer number (502058282400).

Almost surely, 2^{43431011013432} is an apocalyptic number.

43431011013432 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43431011013432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64263460147200).

43431011013432 is an abundant number, since it is smaller than the sum of its proper divisors (85095909280968).

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

43431011013432 is a wasteful number, since it uses less digits than its factorization.

43431011013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19238 (or 19234 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 43431011013432 its reverse (23431011013434), we get a palindrome (66862022026866).

The spelling of 43431011013432 in words is "forty-three trillion, four hundred thirty-one billion, eleven million, thirteen thousand, four hundred thirty-two".