131330243 has 4 divisors (see below), whose sum is σ = 143269368. Its totient is φ = 119391120.

The previous prime is 131330201. The next prime is 131330273. The reversal of 131330243 is 342033131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342033131 = 11 ⋅31093921.

It is a cyclic number.

It is not a de Polignac number, because 131330243 - 2⁶ = 131330179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131330273) 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, 5969546 + ... + 5969567.

It is an arithmetic number, because the mean of its divisors is an integer number (35817342).

Almost surely, 2^131330243 is an apocalyptic number.

131330243 is a deficient number, since it is larger than the sum of its proper divisors (11939125).

131330243 is a wasteful number, since it uses less digits than its factorization.

131330243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939124.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 131330243 is about 11459.9407939134. The cubic root of 131330243 is about 508.3017239027.

Adding to 131330243 its reverse (342033131), we get a palindrome (473363374).

The spelling of 131330243 in words is "one hundred thirty-one million, three hundred thirty thousand, two hundred forty-three".