43143031121 has 4 divisors (see below), whose sum is σ = 43239118500. Its totient is φ = 43046943744.

The previous prime is 43143031117. The next prime is 43143031123. The reversal of 43143031121 is 12113034134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15016051600 + 28126979521 = 122540^2 + 167711^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143031121 - 2² = 43143031117 is a prime.

It is a super-2 number, since 2×43143031121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43143031123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48043016 + ... + 48043913.

It is an arithmetic number, because the mean of its divisors is an integer number (10809779625).

Almost surely, 2^43143031121 is an apocalyptic number.

It is an amenable number.

43143031121 is a deficient number, since it is larger than the sum of its proper divisors (96087379).

43143031121 is an equidigital number, since it uses as much as digits as its factorization.

43143031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96087378.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 43143031121 its reverse (12113034134), we get a palindrome (55256065255).

The spelling of 43143031121 in words is "forty-three billion, one hundred forty-three million, thirty-one thousand, one hundred twenty-one".