131324405 has 16 divisors (see below), whose sum is σ = 167132160. Its totient is φ = 98717952.

The previous prime is 131324387. The next prime is 131324423. The reversal of 131324405 is 504423131.

It is an interprime number because it is at equal distance from previous prime (131324387) and next prime (131324423).

It is a cyclic number.

It is not a de Polignac number, because 131324405 - 2²⁴ = 114547189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87572 + ... + 89058.

It is an arithmetic number, because the mean of its divisors is an integer number (10445760).

Almost surely, 2^131324405 is an apocalyptic number.

It is an amenable number.

131324405 is a deficient number, since it is larger than the sum of its proper divisors (35807755).

131324405 is a wasteful number, since it uses less digits than its factorization.

131324405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 131324405 is about 11459.6860777248. The cubic root of 131324405 is about 508.2941919756.

Adding to 131324405 its reverse (504423131), we get a palindrome (635747536).

The spelling of 131324405 in words is "one hundred thirty-one million, three hundred twenty-four thousand, four hundred five".