131744342438405 has 8 divisors (see below), whose sum is σ = 163544700958200. Its totient is φ = 101761147262656.

The previous prime is 131744342438389. The next prime is 131744342438407. The reversal of 131744342438405 is 504834243447131.

It can be written as a sum of positive squares in 4 ways, for example, as 50588765806084 + 81155576632321 = 7112578^2 + 9008639^2 .

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 131744342438405 - 2⁴ = 131744342438389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131744342438407) 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, 454290835850 + ... + 454290836139.

It is an arithmetic number, because the mean of its divisors is an integer number (20443087619775).

Almost surely, 2^{131744342438405} is an apocalyptic number.

It is an amenable number.

131744342438405 is a deficient number, since it is larger than the sum of its proper divisors (31800358519795).

131744342438405 is an equidigital number, since it uses as much as digits as its factorization.

131744342438405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908581672023.

The product of its (nonzero) digits is 15482880, while the sum is 53.

The spelling of 131744342438405 in words is "one hundred thirty-one trillion, seven hundred forty-four billion, three hundred forty-two million, four hundred thirty-eight thousand, four hundred five".