131120123311 has 4 divisors (see below), whose sum is σ = 131124072352. Its totient is φ = 131116174272.

The previous prime is 131120123287. The next prime is 131120123377. The reversal of 131120123311 is 113321021131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113321021131 = 389 ⋅291313679.

It is a cyclic number.

It is not a de Polignac number, because 131120123311 - 2⁹ = 131120122799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120123711) 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, 1924290 + ... + 1991263.

It is an arithmetic number, because the mean of its divisors is an integer number (32781018088).

Almost surely, 2^131120123311 is an apocalyptic number.

131120123311 is a deficient number, since it is larger than the sum of its proper divisors (3949041).

131120123311 is an equidigital number, since it uses as much as digits as its factorization.

131120123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949040.

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

Adding to 131120123311 its reverse (113321021131), we get a palindrome (244441144442).

The spelling of 131120123311 in words is "one hundred thirty-one billion, one hundred twenty million, one hundred twenty-three thousand, three hundred eleven".