131343535 has 4 divisors (see below), whose sum is σ = 157612248. Its totient is φ = 105074824.

The previous prime is 131343533. The next prime is 131343551. The reversal of 131343535 is 535343131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535343131 = 7541 ⋅70991.

It is a cyclic number.

It is not a de Polignac number, because 131343535 - 2¹ = 131343533 is a prime.

It is a super-2 number, since 2×131343535² = 34502248372592450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131343533) 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, 13134349 + ... + 13134358.

It is an arithmetic number, because the mean of its divisors is an integer number (39403062).

Almost surely, 2^131343535 is an apocalyptic number.

131343535 is a deficient number, since it is larger than the sum of its proper divisors (26268713).

131343535 is an equidigital number, since it uses as much as digits as its factorization.

131343535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26268712.

The product of its digits is 8100, while the sum is 28.

The square root of 131343535 is about 11460.5207124284. The cubic root of 131343535 is about 508.3188718153.

Adding to 131343535 its reverse (535343131), we get a palindrome (666686666).

The spelling of 131343535 in words is "one hundred thirty-one million, three hundred forty-three thousand, five hundred thirty-five".