131122002311 has 4 divisors (see below), whose sum is σ = 131127301800. Its totient is φ = 131116702824.

The previous prime is 131122002289. The next prime is 131122002343. The reversal of 131122002311 is 113200221131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113200221131 = 1021 ⋅110871911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131122002311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131122002311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122002611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612456 + ... + 2662173.

It is an arithmetic number, because the mean of its divisors is an integer number (32781825450).

Almost surely, 2^131122002311 is an apocalyptic number.

131122002311 is a deficient number, since it is larger than the sum of its proper divisors (5299489).

131122002311 is an equidigital number, since it uses as much as digits as its factorization.

131122002311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5299488.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131122002311 its reverse (113200221131), we get a palindrome (244322223442).

The spelling of 131122002311 in words is "one hundred thirty-one billion, one hundred twenty-two million, two thousand, three hundred eleven".