131212230031231 has 8 divisors (see below), whose sum is σ = 140010166148720. Its totient is φ = 122603496841152.

The previous prime is 131212230031199. The next prime is 131212230031237. The reversal of 131212230031231 is 132130032212131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131212230031231 - 2⁵ = 131212230031199 is a prime.

It is a super-2 number, since 2×131212230031231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131212230031196 and 131212230031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212230031237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47300730420 + ... + 47300733193.

It is an arithmetic number, because the mean of its divisors is an integer number (17501270768590).

Almost surely, 2^{131212230031231} is an apocalyptic number.

131212230031231 is a deficient number, since it is larger than the sum of its proper divisors (8797936117489).

131212230031231 is an equidigital number, since it uses as much as digits as its factorization.

131212230031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94601463705.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 131212230031231 its reverse (132130032212131), we get a palindrome (263342262243362).

The spelling of 131212230031231 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty million, thirty-one thousand, two hundred thirty-one".