43431403040 has 48 divisors (see below), whose sum is σ = 102650755032. Its totient is φ = 17365100544.

The previous prime is 43431403019. The next prime is 43431403097. The reversal of 43431403040 is 4030413434.

It can be written as a sum of positive squares in 4 ways, for example, as 37151791504 + 6279611536 = 192748^2 + 79244^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323222 + ... + 437418.

Almost surely, 2^43431403040 is an apocalyptic number.

43431403040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43431403040 is an abundant number, since it is smaller than the sum of its proper divisors (59219351992).

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

43431403040 is a wasteful number, since it uses less digits than its factorization.

43431403040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116589 (or 116581 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43431403040 its reverse (4030413434), we get a palindrome (47461816474).

The spelling of 43431403040 in words is "forty-three billion, four hundred thirty-one million, four hundred three thousand, forty".