311341203513 has 12 divisors (see below), whose sum is σ = 454351310868. Its totient is φ = 205420999680.

The previous prime is 311341203491. The next prime is 311341203517. The reversal of 311341203513 is 315302143113.

311341203513 is a `hidden beast` number, since 3 + 1 + 134 + 12 + 0 + 3 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136728373824 + 174612829689 = 369768^2 + 417867^2 .

It is a de Polignac number, because none of the positive numbers 2^k-311341203513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311341203517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178315968 + ... + 178317713.

It is an arithmetic number, because the mean of its divisors is an integer number (37862609239).

Almost surely, 2^311341203513 is an apocalyptic number.

It is an amenable number.

311341203513 is a deficient number, since it is larger than the sum of its proper divisors (143010107355).

311341203513 is a wasteful number, since it uses less digits than its factorization.

311341203513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356633784 (or 356633781 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 311341203513 its reverse (315302143113), we get a palindrome (626643346626).

The spelling of 311341203513 in words is "three hundred eleven billion, three hundred forty-one million, two hundred three thousand, five hundred thirteen".