311404433242021 has 16 divisors (see below), whose sum is σ = 356805358329600. Its totient is φ = 266232220848000.

The previous prime is 311404433241997. The next prime is 311404433242037. The reversal of 311404433242021 is 120242334404113.

It is a cyclic number.

It is not a de Polignac number, because 311404433242021 - 2⁴¹ = 309205409986469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311404433246021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52051305 + ... + 57724753.

It is an arithmetic number, because the mean of its divisors is an integer number (22300334895600).

Almost surely, 2^{311404433242021} is an apocalyptic number.

It is an amenable number.

311404433242021 is a deficient number, since it is larger than the sum of its proper divisors (45400925087579).

311404433242021 is a wasteful number, since it uses less digits than its factorization.

311404433242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693604.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 311404433242021 its reverse (120242334404113), we get a palindrome (431646767646134).

The spelling of 311404433242021 in words is "three hundred eleven trillion, four hundred four billion, four hundred thirty-three million, two hundred forty-two thousand, twenty-one".