131242313 has 8 divisors (see below), whose sum is σ = 140148480. Its totient is φ = 122628240.

The previous prime is 131242277. The next prime is 131242351. The reversal of 131242313 is 313242131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131242313 - 2⁶ = 131242249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131242613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72095 + ... + 73892.

It is an arithmetic number, because the mean of its divisors is an integer number (17518560).

Almost surely, 2^131242313 is an apocalyptic number.

It is an amenable number.

131242313 is a deficient number, since it is larger than the sum of its proper divisors (8906167).

131242313 is a wasteful number, since it uses less digits than its factorization.

131242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146047.

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

The square root of 131242313 is about 11456.1037442928. The cubic root of 131242313 is about 508.1882568946.

Adding to 131242313 its reverse (313242131), we get a palindrome (444484444).

The spelling of 131242313 in words is "one hundred thirty-one million, two hundred forty-two thousand, three hundred thirteen".