131212004023231 has 8 divisors (see below), whose sum is σ = 133141251832160. Its totient is φ = 129286319000832.

The previous prime is 131212004023193. The next prime is 131212004023241. The reversal of 131212004023231 is 132320400212131.

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 131212004023231 - 2²¹ = 131212001926079 is a prime.

It is a super-2 number, since 2×131212004023231² (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 = 131212004023196 and 131212004023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212004023241) 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, 890622435 + ... + 890769748.

It is an arithmetic number, because the mean of its divisors is an integer number (16642656479020).

Almost surely, 2^{131212004023231} is an apocalyptic number.

131212004023231 is a deficient number, since it is larger than the sum of its proper divisors (1929247808929).

131212004023231 is a wasteful number, since it uses less digits than its factorization.

131212004023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781393265.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131212004023231 its reverse (132320400212131), we get a palindrome (263532404235362).

The spelling of 131212004023231 in words is "one hundred thirty-one trillion, two hundred twelve billion, four million, twenty-three thousand, two hundred thirty-one".