131204343 has 4 divisors (see below), whose sum is σ = 174939128. Its totient is φ = 87469560.

The previous prime is 131204303. The next prime is 131204357. The reversal of 131204343 is 343402131.

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

It is not a de Polignac number, because 131204343 - 2¹³ = 131196151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204303) 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, 21867388 + ... + 21867393.

It is an arithmetic number, because the mean of its divisors is an integer number (43734782).

Almost surely, 2^131204343 is an apocalyptic number.

131204343 is a deficient number, since it is larger than the sum of its proper divisors (43734785).

131204343 is an equidigital number, since it uses as much as digits as its factorization.

131204343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43734784.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131204343 is about 11454.4464292256. The cubic root of 131204343 is about 508.1392438164.

Adding to 131204343 its reverse (343402131), we get a palindrome (474606474).

The spelling of 131204343 in words is "one hundred thirty-one million, two hundred four thousand, three hundred forty-three".