43234012321 has 16 divisors (see below), whose sum is σ = 44886555648. Its totient is φ = 41611525200.

The previous prime is 43234012313. The next prime is 43234012351. The reversal of 43234012321 is 12321043234.

It is a cyclic number.

It is not a de Polignac number, because 43234012321 - 2³ = 43234012313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43234012351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10216276 + ... + 10220506.

It is an arithmetic number, because the mean of its divisors is an integer number (2805409728).

Almost surely, 2^43234012321 is an apocalyptic number.

It is an amenable number.

43234012321 is a deficient number, since it is larger than the sum of its proper divisors (1652543327).

43234012321 is a wasteful number, since it uses less digits than its factorization.

43234012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 43234012321 its reverse (12321043234), we get a palindrome (55555055555).

The spelling of 43234012321 in words is "forty-three billion, two hundred thirty-four million, twelve thousand, three hundred twenty-one".