311011001311 has 32 divisors (see below), whose sum is σ = 349683333120. Its totient is φ = 274878489600.

The previous prime is 311011001299. The next prime is 311011001333. The reversal of 311011001311 is 113100110113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311011001311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311011001291 and 311011001300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311011301311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41928475 + ... + 41935891.

It is an arithmetic number, because the mean of its divisors is an integer number (10927604160).

Almost surely, 2^311011001311 is an apocalyptic number.

311011001311 is a deficient number, since it is larger than the sum of its proper divisors (38672331809).

311011001311 is a wasteful number, since it uses less digits than its factorization.

311011001311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8575.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 311011001311 its reverse (113100110113), we get a palindrome (424111111424).

The spelling of 311011001311 in words is "three hundred eleven billion, eleven million, one thousand, three hundred eleven".