131142410243221 has 8 divisors (see below), whose sum is σ = 145047322764344. Its totient is φ = 117782788409280.

The previous prime is 131142410243111. The next prime is 131142410243227. The reversal of 131142410243221 is 122342014241131.

It can be written as a sum of positive squares in 4 ways, for example, as 1717908276100 + 129424501967121 = 1310690^2 + 11376489^2 .

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 131142410243221 - 2⁹ = 131142410242709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131142410243227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136322671290 + ... + 136322672251.

It is an arithmetic number, because the mean of its divisors is an integer number (18130915345543).

Almost surely, 2^{131142410243221} is an apocalyptic number.

It is an amenable number.

131142410243221 is a deficient number, since it is larger than the sum of its proper divisors (13904912521123).

131142410243221 is a wasteful number, since it uses less digits than its factorization.

131142410243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272645343591.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 131142410243221 its reverse (122342014241131), we get a palindrome (253484424484352).

The spelling of 131142410243221 in words is "one hundred thirty-one trillion, one hundred forty-two billion, four hundred ten million, two hundred forty-three thousand, two hundred twenty-one".