131240343 has 16 divisors (see below), whose sum is σ = 192832640. Its totient is φ = 78884064.

The previous prime is 131240299. The next prime is 131240371. The reversal of 131240343 is 343042131.

It is not a de Polignac number, because 131240343 - 2⁹ = 131239831 is a prime.

It is a super-3 number, since 3×131240343³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131240393) 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, 37453 + ... + 40806.

It is an arithmetic number, because the mean of its divisors is an integer number (12052040).

Almost surely, 2^131240343 is an apocalyptic number.

131240343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131240343 is a deficient number, since it is larger than the sum of its proper divisors (61592297).

131240343 is a wasteful number, since it uses less digits than its factorization.

131240343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78318.

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

The square root of 131240343 is about 11456.0177636035. The cubic root of 131240343 is about 508.1857141784.

Adding to 131240343 its reverse (343042131), we get a palindrome (474282474).

The spelling of 131240343 in words is "one hundred thirty-one million, two hundred forty thousand, three hundred forty-three".