311431130011 has 4 divisors (see below), whose sum is σ = 316709623800. Its totient is φ = 306152636224.

The previous prime is 311431130009. The next prime is 311431130069. The reversal of 311431130011 is 110031134113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 311431130011 - 2¹ = 311431130009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311431130411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639246806 + ... + 2639246923.

It is an arithmetic number, because the mean of its divisors is an integer number (79177405950).

Almost surely, 2^311431130011 is an apocalyptic number.

311431130011 is a deficient number, since it is larger than the sum of its proper divisors (5278493789).

311431130011 is an equidigital number, since it uses as much as digits as its factorization.

311431130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278493788.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 311431130011 its reverse (110031134113), we get a palindrome (421462264124).

The spelling of 311431130011 in words is "three hundred eleven billion, four hundred thirty-one million, one hundred thirty thousand, eleven".