131320345311 has 20 divisors (see below), whose sum is σ = 197469055344. Its totient is φ = 86967108000.

The previous prime is 131320345307. The next prime is 131320345369. The reversal of 131320345311 is 113543023131.

131320345311 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 2 + 0 + 345 + 311 = 666.

It is not a de Polignac number, because 131320345311 - 2² = 131320345307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320340311) 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 19 ways as a sum of consecutive naturals, for example, 5356110 + ... + 5380571.

Almost surely, 2^131320345311 is an apocalyptic number.

131320345311 is a deficient number, since it is larger than the sum of its proper divisors (66148710033).

131320345311 is a wasteful number, since it uses less digits than its factorization.

131320345311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10736844 (or 10736835 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 131320345311 its reverse (113543023131), we get a palindrome (244863368442).

The spelling of 131320345311 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred forty-five thousand, three hundred eleven".