311230311011 has 4 divisors (see below), whose sum is σ = 311231637024. Its totient is φ = 311228985000.

The previous prime is 311230310971. The next prime is 311230311013. The reversal of 311230311011 is 110113032113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311230311011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311230311013) 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, 205880 + ... + 815381.

It is an arithmetic number, because the mean of its divisors is an integer number (77807909256).

Almost surely, 2^311230311011 is an apocalyptic number.

311230311011 is a deficient number, since it is larger than the sum of its proper divisors (1326013).

311230311011 is a wasteful number, since it uses less digits than its factorization.

311230311011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326012.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 311230311011 its reverse (110113032113), we get a palindrome (421343343124).

The spelling of 311230311011 in words is "three hundred eleven billion, two hundred thirty million, three hundred eleven thousand, eleven".