131140343 has 4 divisors (see below), whose sum is σ = 132613920. Its totient is φ = 129666768.

The previous prime is 131140333. The next prime is 131140393. The reversal of 131140343 is 343041131.

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 131140343 - 2¹⁰ = 131139319 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 (131140333) 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, 736655 + ... + 736832.

It is an arithmetic number, because the mean of its divisors is an integer number (33153480).

Almost surely, 2^131140343 is an apocalyptic number.

131140343 is a deficient number, since it is larger than the sum of its proper divisors (1473577).

131140343 is an equidigital number, since it uses as much as digits as its factorization.

131140343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473576.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 131140343 is about 11451.6524135166. The cubic root of 131140343 is about 508.0566088465.

Adding to 131140343 its reverse (343041131), we get a palindrome (474181474).

The spelling of 131140343 in words is "one hundred thirty-one million, one hundred forty thousand, three hundred forty-three".