43131301013 has 2 divisors, whose sum is σ = 43131301014. Its totient is φ = 43131301012.

The previous prime is 43131301009. The next prime is 43131301051. The reversal of 43131301013 is 31010313134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34545054769 + 8586246244 = 185863^2 + 92662^2 .

It is a cyclic number.

It is not a de Polignac number, because 43131301013 - 2² = 43131301009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43131306013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21565650506 + 21565650507.

It is an arithmetic number, because the mean of its divisors is an integer number (21565650507).

Almost surely, 2^43131301013 is an apocalyptic number.

It is an amenable number.

43131301013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43131301013 is an equidigital number, since it uses as much as digits as its factorization.

43131301013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 43131301013 its reverse (31010313134), we get a palindrome (74141614147).

The spelling of 43131301013 in words is "forty-three billion, one hundred thirty-one million, three hundred one thousand, thirteen".