131201440443123 has 16 divisors (see below), whose sum is σ = 182013559017120. Its totient is φ = 83963342914304.

The previous prime is 131201440443089. The next prime is 131201440443187. The reversal of 131201440443123 is 321344044102131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131201440443123 - 2¹⁰ = 131201440442099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131201441443123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4358547186 + ... + 4358577287.

It is an arithmetic number, because the mean of its divisors is an integer number (11375847438570).

Almost surely, 2^{131201440443123} is an apocalyptic number.

131201440443123 is a deficient number, since it is larger than the sum of its proper divisors (50812118573997).

131201440443123 is a wasteful number, since it uses less digits than its factorization.

131201440443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8717124678.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 131201440443123 its reverse (321344044102131), we get a palindrome (452545484545254).

The spelling of 131201440443123 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred forty million, four hundred forty-three thousand, one hundred twenty-three".