131444601405 has 16 divisors (see below), whose sum is σ = 226489159680. Its totient is φ = 64711188288.

The previous prime is 131444601403. The next prime is 131444601439. The reversal of 131444601405 is 504106444131.

It is not a de Polignac number, because 131444601405 - 2¹ = 131444601403 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 (131444601403) 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, 337037245 + ... + 337037634.

It is an arithmetic number, because the mean of its divisors is an integer number (14155572480).

Almost surely, 2^131444601405 is an apocalyptic number.

131444601405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131444601405 is a deficient number, since it is larger than the sum of its proper divisors (95044558275).

131444601405 is a wasteful number, since it uses less digits than its factorization.

131444601405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674074900.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 131444601405 in words is "one hundred thirty-one billion, four hundred forty-four million, six hundred one thousand, four hundred five".