131120321031 has 18 divisors (see below), whose sum is σ = 220317819072. Its totient is φ = 74925897480.

The previous prime is 131120321023. The next prime is 131120321069. The reversal of 131120321031 is 130123021131.

131120321031 is a `hidden beast` number, since 1 + 311 + 2 + 0 + 321 + 0 + 31 = 666.

It is not a de Polignac number, because 131120321031 - 2³ = 131120321023 is a prime.

It is a super-2 number, since 2×131120321031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131120320995 and 131120321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120326031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 148662055 + ... + 148662936.

Almost surely, 2^131120321031 is an apocalyptic number.

131120321031 is a deficient number, since it is larger than the sum of its proper divisors (89197498041).

131120321031 is a wasteful number, since it uses less digits than its factorization.

131120321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297325011 (or 297325001 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131120321031 its reverse (130123021131), we get a palindrome (261243342162).

The spelling of 131120321031 in words is "one hundred thirty-one billion, one hundred twenty million, three hundred twenty-one thousand, thirty-one".