131241423 has 4 divisors (see below), whose sum is σ = 174988568. Its totient is φ = 87494280.

The previous prime is 131241421. The next prime is 131241449. The reversal of 131241423 is 324142131.

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

It is not a de Polignac number, because 131241423 - 2¹ = 131241421 is a prime.

It is a super-2 number, since 2×131241423² = 34448622222129858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131241423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131241421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21873568 + ... + 21873573.

It is an arithmetic number, because the mean of its divisors is an integer number (43747142).

Almost surely, 2^131241423 is an apocalyptic number.

131241423 is a deficient number, since it is larger than the sum of its proper divisors (43747145).

131241423 is an equidigital number, since it uses as much as digits as its factorization.

131241423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43747144.

The product of its digits is 576, while the sum is 21.

The square root of 131241423 is about 11456.0649003050. The cubic root of 131241423 is about 508.1871081580.

Adding to 131241423 its reverse (324142131), we get a palindrome (455383554).

The spelling of 131241423 in words is "one hundred thirty-one million, two hundred forty-one thousand, four hundred twenty-three".