43513321022231 has 2 divisors, whose sum is σ = 43513321022232. Its totient is φ = 43513321022230.

The previous prime is 43513321022177. The next prime is 43513321022251. The reversal of 43513321022231 is 13222012331534.

43513321022231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43513321022231 is a prime.

It is a super-2 number, since 2×43513321022231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43513321022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21756660511115 + 21756660511116.

It is an arithmetic number, because the mean of its divisors is an integer number (21756660511116).

Almost surely, 2^{43513321022231} is an apocalyptic number.

43513321022231 is a deficient number, since it is larger than the sum of its proper divisors (1).

43513321022231 is an equidigital number, since it uses as much as digits as its factorization.

43513321022231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 43513321022231 its reverse (13222012331534), we get a palindrome (56735333353765).

The spelling of 43513321022231 in words is "forty-three trillion, five hundred thirteen billion, three hundred twenty-one million, twenty-two thousand, two hundred thirty-one".