43111322231 has 4 divisors (see below), whose sum is σ = 43595719200. Its totient is φ = 42626925264.

The previous prime is 43111322209. The next prime is 43111322249. The reversal of 43111322231 is 13222311134.

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

It is a cyclic number.

It is not a de Polignac number, because 43111322231 - 2⁶ = 43111322167 is a prime.

It is a super-3 number, since 3×43111322231³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43111322197 and 43111322206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43111324231) 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, 242198351 + ... + 242198528.

It is an arithmetic number, because the mean of its divisors is an integer number (10898929800).

Almost surely, 2^43111322231 is an apocalyptic number.

43111322231 is a deficient number, since it is larger than the sum of its proper divisors (484396969).

43111322231 is an equidigital number, since it uses as much as digits as its factorization.

43111322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484396968.

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

Adding to 43111322231 its reverse (13222311134), we get a palindrome (56333633365).

The spelling of 43111322231 in words is "forty-three billion, one hundred eleven million, three hundred twenty-two thousand, two hundred thirty-one".