311201311131 has 24 divisors (see below), whose sum is σ = 450021130416. Its totient is φ = 207233164800.

The previous prime is 311201311123. The next prime is 311201311133. The reversal of 311201311131 is 131113102113.

It is not a de Polignac number, because 311201311131 - 2³ = 311201311123 is a prime.

It is a super-2 number, since 2×311201311131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311201311133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43260871 + ... + 43268063.

It is an arithmetic number, because the mean of its divisors is an integer number (18750880434).

Almost surely, 2^311201311131 is an apocalyptic number.

311201311131 is a deficient number, since it is larger than the sum of its proper divisors (138819819285).

311201311131 is a wasteful number, since it uses less digits than its factorization.

311201311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963 (or 11960 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 311201311131 its reverse (131113102113), we get a palindrome (442314413244).

The spelling of 311201311131 in words is "three hundred eleven billion, two hundred one million, three hundred eleven thousand, one hundred thirty-one".