131312332221031 has 32 divisors (see below), whose sum is σ = 150163948408320. Its totient is φ = 113899338393984.

The previous prime is 131312332220981. The next prime is 131312332221041. The reversal of 131312332221031 is 130122233213131.

It is not a de Polignac number, because 131312332221031 - 2⁷ = 131312332220903 is a prime.

It is a super-2 number, since 2×131312332221031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312332221041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23651965 + ... + 28671241.

It is an arithmetic number, because the mean of its divisors is an integer number (4692623387760).

Almost surely, 2^{131312332221031} is an apocalyptic number.

131312332221031 is a deficient number, since it is larger than the sum of its proper divisors (18851616187289).

131312332221031 is a wasteful number, since it uses less digits than its factorization.

131312332221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020855.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 131312332221031 its reverse (130122233213131), we get a palindrome (261434565434162).

The spelling of 131312332221031 in words is "one hundred thirty-one trillion, three hundred twelve billion, three hundred thirty-two million, two hundred twenty-one thousand, thirty-one".