43312121313911 has 2 divisors, whose sum is σ = 43312121313912. Its totient is φ = 43312121313910.

The previous prime is 43312121313907. The next prime is 43312121314003. The reversal of 43312121313911 is 11931312121334.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43312121313911 - 2² = 43312121313907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43312121313511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21656060656955 + 21656060656956.

It is an arithmetic number, because the mean of its divisors is an integer number (21656060656956).

Almost surely, 2^{43312121313911} is an apocalyptic number.

43312121313911 is a deficient number, since it is larger than the sum of its proper divisors (1).

43312121313911 is an equidigital number, since it uses as much as digits as its factorization.

43312121313911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The spelling of 43312121313911 in words is "forty-three trillion, three hundred twelve billion, one hundred twenty-one million, three hundred thirteen thousand, nine hundred eleven".