311432012220343 has 4 divisors (see below), whose sum is σ = 355922299680400. Its totient is φ = 266941724760288.

The previous prime is 311432012220293. The next prime is 311432012220361. The reversal of 311432012220343 is 343022210234113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311432012220343 - 2¹³ = 311432012212151 is a prime.

It is a super-2 number, since 2×311432012220343² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311432012220443) 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 3 ways as a sum of consecutive naturals, for example, 22245143730018 + ... + 22245143730031.

It is an arithmetic number, because the mean of its divisors is an integer number (88980574920100).

Almost surely, 2^{311432012220343} is an apocalyptic number.

311432012220343 is a deficient number, since it is larger than the sum of its proper divisors (44490287460057).

311432012220343 is an equidigital number, since it uses as much as digits as its factorization.

311432012220343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44490287460056.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 311432012220343 its reverse (343022210234113), we get a palindrome (654454222454456).

The spelling of 311432012220343 in words is "three hundred eleven trillion, four hundred thirty-two billion, twelve million, two hundred twenty thousand, three hundred forty-three".