43116431 has 4 divisors (see below), whose sum is σ = 43140000. Its totient is φ = 43092864.

The previous prime is 43116427. The next prime is 43116497. The reversal of 43116431 is 13461134.

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 43116431 - 2² = 43116427 is a prime.

It is a super-2 number, since 2×43116431² = 3718053244355522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43116397 and 43116406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43116331) 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, 8786 + ... + 12783.

It is an arithmetic number, because the mean of its divisors is an integer number (10785000).

Almost surely, 2^43116431 is an apocalyptic number.

43116431 is a deficient number, since it is larger than the sum of its proper divisors (23569).

43116431 is a wasteful number, since it uses less digits than its factorization.

43116431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23568.

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

The square root of 43116431 is about 6566.3103033591. The cubic root of 43116431 is about 350.6557258309.

Adding to 43116431 its reverse (13461134), we get a palindrome (56577565).

The spelling of 43116431 in words is "forty-three million, one hundred sixteen thousand, four hundred thirty-one".