4311221979331 has 2 divisors, whose sum is σ = 4311221979332. Its totient is φ = 4311221979330.

The previous prime is 4311221979301. The next prime is 4311221979349. The reversal of 4311221979331 is 1339791221134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4311221979331 - 2⁷ = 4311221979203 is a prime.

It is a super-2 number, since 2×4311221979331² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4311221979301) 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, 2155610989665 + 2155610989666.

It is an arithmetic number, because the mean of its divisors is an integer number (2155610989666).

Almost surely, 2^{4311221979331} is an apocalyptic number.

4311221979331 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311221979331 is an equidigital number, since it uses as much as digits as its factorization.

4311221979331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The spelling of 4311221979331 in words is "four trillion, three hundred eleven billion, two hundred twenty-one million, nine hundred seventy-nine thousand, three hundred thirty-one".