43431430401 has 12 divisors (see below), whose sum is σ = 63797582160. Its totient is φ = 28463535960.

The previous prime is 43431430397. The next prime is 43431430411. The reversal of 43431430401 is 10403413434.

43431430401 is a `hidden beast` number, since 4 + 343 + 14 + 304 + 0 + 1 = 666.

It is not a de Polignac number, because 43431430401 - 2² = 43431430397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43431430411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40895355 + ... + 40896416.

It is an arithmetic number, because the mean of its divisors is an integer number (5316465180).

Almost surely, 2^43431430401 is an apocalyptic number.

It is an amenable number.

43431430401 is a deficient number, since it is larger than the sum of its proper divisors (20366151759).

43431430401 is a wasteful number, since it uses less digits than its factorization.

43431430401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81791836 (or 81791833 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 43431430401 its reverse (10403413434), we get a palindrome (53834843835).

The spelling of 43431430401 in words is "forty-three billion, four hundred thirty-one million, four hundred thirty thousand, four hundred one".