3111323131311 has 16 divisors (see below), whose sum is σ = 4177250784000. Its totient is φ = 2059829135168.

The previous prime is 3111323131307. The next prime is 3111323131351. The reversal of 3111323131311 is 1131313231113.

It is a cyclic number.

It is not a de Polignac number, because 3111323131311 - 2² = 3111323131307 is a prime.

It is a super-2 number, since 2×3111323131311² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111323131351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434521 + ... + 3485618.

It is an arithmetic number, because the mean of its divisors is an integer number (261078174000).

Almost surely, 2^{3111323131311} is an apocalyptic number.

3111323131311 is a deficient number, since it is larger than the sum of its proper divisors (1065927652689).

3111323131311 is a wasteful number, since it uses less digits than its factorization.

3111323131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921358.

The product of its digits is 486, while the sum is 24.

Adding to 3111323131311 its reverse (1131313231113), we get a palindrome (4242636362424).

It can be divided in two parts, 311132 and 3131311, that added together give a palindrome (3442443).

The spelling of 3111323131311 in words is "three trillion, one hundred eleven billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred eleven".