311302113331 has 4 divisors (see below), whose sum is σ = 339602305464. Its totient is φ = 283001921200.

The previous prime is 311302113329. The next prime is 311302113341. The reversal of 311302113331 is 133311203113.

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 311302113331 - 2¹ = 311302113329 is a prime.

It is a super-2 number, since 2×311302113331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311302113301) 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 3 ways as a sum of consecutive naturals, for example, 14150096050 + ... + 14150096071.

It is an arithmetic number, because the mean of its divisors is an integer number (84900576366).

Almost surely, 2^311302113331 is an apocalyptic number.

311302113331 is a deficient number, since it is larger than the sum of its proper divisors (28300192133).

311302113331 is a wasteful number, since it uses less digits than its factorization.

311302113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28300192132.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 311302113331 its reverse (133311203113), we get a palindrome (444613316444).

The spelling of 311302113331 in words is "three hundred eleven billion, three hundred two million, one hundred thirteen thousand, three hundred thirty-one".