131212230040431 has 24 divisors (see below), whose sum is σ = 189780873356880. Its totient is φ = 87358538432256.

The previous prime is 131212230040391. The next prime is 131212230040519. The reversal of 131212230040431 is 134040032212131.

131212230040431 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 223 + 0 + 0 + 4 + 0 + 431 = 666.

It is not a de Polignac number, because 131212230040431 - 2¹⁴ = 131212230024047 is a prime.

It is a super-2 number, since 2×131212230040431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131212230040395 and 131212230040404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212230040831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19340185 + ... + 25228301.

It is an arithmetic number, because the mean of its divisors is an integer number (7907536389870).

Almost surely, 2^{131212230040431} is an apocalyptic number.

131212230040431 is a deficient number, since it is larger than the sum of its proper divisors (58568643316449).

131212230040431 is a wasteful number, since it uses less digits than its factorization.

131212230040431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891415 (or 5891412 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131212230040431 its reverse (134040032212131), we get a palindrome (265252262252562).

The spelling of 131212230040431 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty million, forty thousand, four hundred thirty-one".