43204320243 has 16 divisors (see below), whose sum is σ = 73150172160. Its totient is φ = 24688182888.

The previous prime is 43204320241. The next prime is 43204320283. The reversal of 43204320243 is 34202340234.

It is not a de Polignac number, because 43204320243 - 2¹ = 43204320241 is a prime.

It is a super-2 number, since 2×43204320243² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43204320241) 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, 114296955 + ... + 114297332.

It is an arithmetic number, because the mean of its divisors is an integer number (4571885760).

Almost surely, 2^43204320243 is an apocalyptic number.

43204320243 is a deficient number, since it is larger than the sum of its proper divisors (29945851917).

43204320243 is a wasteful number, since it uses less digits than its factorization.

43204320243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228594303 (or 228594297 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 43204320243 its reverse (34202340234), we get a palindrome (77406660477).

The spelling of 43204320243 in words is "forty-three billion, two hundred four million, three hundred twenty thousand, two hundred forty-three".