131444423 has 4 divisors (see below), whose sum is σ = 143393928. Its totient is φ = 119494920.

The previous prime is 131444407. The next prime is 131444441. The reversal of 131444423 is 324444131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131444423 - 2⁴ = 131444407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131444392 and 131444401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131444473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5974736 + ... + 5974757.

It is an arithmetic number, because the mean of its divisors is an integer number (35848482).

Almost surely, 2^131444423 is an apocalyptic number.

131444423 is a deficient number, since it is larger than the sum of its proper divisors (11949505).

131444423 is a wasteful number, since it uses less digits than its factorization.

131444423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11949504.

The product of its digits is 4608, while the sum is 26.

The square root of 131444423 is about 11464.9214127267. The cubic root of 131444423 is about 508.4489889906.

Adding to 131444423 its reverse (324444131), we get a palindrome (455888554).

The spelling of 131444423 in words is "one hundred thirty-one million, four hundred forty-four thousand, four hundred twenty-three".