311123211011 has 8 divisors (see below), whose sum is σ = 312396598800. Its totient is φ = 309852252640.

The previous prime is 311123210987. The next prime is 311123211019. The reversal of 311123211011 is 110112321113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311123211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311123211019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350480 + ... + 863181.

It is an arithmetic number, because the mean of its divisors is an integer number (39049574850).

Almost surely, 2^311123211011 is an apocalyptic number.

311123211011 is a deficient number, since it is larger than the sum of its proper divisors (1273387789).

311123211011 is a wasteful number, since it uses less digits than its factorization.

311123211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214709.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 311123211011 its reverse (110112321113), we get a palindrome (421235532124).

The spelling of 311123211011 in words is "three hundred eleven billion, one hundred twenty-three million, two hundred eleven thousand, eleven".