311531536386341 has 4 divisors (see below), whose sum is σ = 312008613778092. Its totient is φ = 311054458994592.

The previous prime is 311531536386263. The next prime is 311531536386349. The reversal of 311531536386341 is 143683635135113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63133290357316 + 248398246029025 = 7945646^2 + 15760655^2 .

It is a cyclic number.

It is not a de Polignac number, because 311531536386341 - 2³⁰ = 311530462644517 is a prime.

It is a super-2 number, since 2×311531536386341² (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 (311531536386349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238538694896 + ... + 238538696201.

It is an arithmetic number, because the mean of its divisors is an integer number (78002153444523).

Almost surely, 2^{311531536386341} is an apocalyptic number.

It is an amenable number.

311531536386341 is a deficient number, since it is larger than the sum of its proper divisors (477077391751).

311531536386341 is an equidigital number, since it uses as much as digits as its factorization.

311531536386341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477077391750.

The product of its digits is 6998400, while the sum is 53.

The spelling of 311531536386341 in words is "three hundred eleven trillion, five hundred thirty-one billion, five hundred thirty-six million, three hundred eighty-six thousand, three hundred forty-one".