43120313 has 8 divisors (see below), whose sum is σ = 45826632. Its totient is φ = 40432896.

The previous prime is 43120277. The next prime is 43120369. The reversal of 43120313 is 31302134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1026169 + 42094144 = 1013^2 + 6488^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43120313 - 2⁶ = 43120249 is a prime.

It is a super-2 number, since 2×43120313² = 3718722786435938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43120291 and 43120300.

It is not an unprimeable number, because it can be changed into a prime (43120373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (5728329).

Almost surely, 2^43120313 is an apocalyptic number.

It is an amenable number.

43120313 is a deficient number, since it is larger than the sum of its proper divisors (2706319).

43120313 is a wasteful number, since it uses less digits than its factorization.

43120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 43120313 is about 6566.6058965039. The cubic root of 43120313 is about 350.6662493108. Note that the first 3 decimals are identical.

Adding to 43120313 its reverse (31302134), we get a palindrome (74422447).

The spelling of 43120313 in words is "forty-three million, one hundred twenty thousand, three hundred thirteen".