43311402321 has 32 divisors (see below), whose sum is σ = 64694661120. Its totient is φ = 25551926400.

The previous prime is 43311402301. The next prime is 43311402331. The reversal of 43311402321 is 12320411334.

It is a happy number.

It is not a de Polignac number, because 43311402321 - 2⁵ = 43311402289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43311402291 and 43311402300.

It is not an unprimeable number, because it can be changed into a prime (43311402301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68101 + ... + 302093.

It is an arithmetic number, because the mean of its divisors is an integer number (2021708160).

Almost surely, 2^43311402321 is an apocalyptic number.

It is an amenable number.

43311402321 is a deficient number, since it is larger than the sum of its proper divisors (21383258799).

43311402321 is a wasteful number, since it uses less digits than its factorization.

43311402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234157.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 43311402321 its reverse (12320411334), we get a palindrome (55631813655).

The spelling of 43311402321 in words is "forty-three billion, three hundred eleven million, four hundred two thousand, three hundred twenty-one".