43432531313 has 2 divisors, whose sum is σ = 43432531314. Its totient is φ = 43432531312.

The previous prime is 43432531291. The next prime is 43432531343. The reversal of 43432531313 is 31313523434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34962642289 + 8469889024 = 186983^2 + 92032^2 .

It is a cyclic number.

It is not a de Polignac number, because 43432531313 - 2²² = 43428337009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43432531313.

It is not a weakly prime, because it can be changed into another prime (43432531343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21716265656 + 21716265657.

It is an arithmetic number, because the mean of its divisors is an integer number (21716265657).

Almost surely, 2^43432531313 is an apocalyptic number.

It is an amenable number.

43432531313 is a deficient number, since it is larger than the sum of its proper divisors (1).

43432531313 is an equidigital number, since it uses as much as digits as its factorization.

43432531313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 32.

The spelling of 43432531313 in words is "forty-three billion, four hundred thirty-two million, five hundred thirty-one thousand, three hundred thirteen".