312155522243311 has 8 divisors (see below), whose sum is σ = 312764264133984. Its totient is φ = 311547113095680.

The previous prime is 312155522243273. The next prime is 312155522243353. The reversal of 312155522243311 is 113342225551213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312155522243311 - 2⁴⁷ = 171418033887983 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 (312155522243111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81307635 + ... + 85060228.

It is an arithmetic number, because the mean of its divisors is an integer number (39095533016748).

Almost surely, 2^{312155522243311} is an apocalyptic number.

312155522243311 is a deficient number, since it is larger than the sum of its proper divisors (608741890673).

312155522243311 is a wasteful number, since it uses less digits than its factorization.

312155522243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166371521.

The product of its digits is 216000, while the sum is 40.

Adding to 312155522243311 its reverse (113342225551213), we get a palindrome (425497747794524).

The spelling of 312155522243311 in words is "three hundred twelve trillion, one hundred fifty-five billion, five hundred twenty-two million, two hundred forty-three thousand, three hundred eleven".