131243351 has 4 divisors (see below), whose sum is σ = 131483832. Its totient is φ = 131002872.

The previous prime is 131243347. The next prime is 131243443. The reversal of 131243351 is 153342131.

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 131243351 - 2² = 131243347 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 (131243251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119420 + ... + 120513.

It is an arithmetic number, because the mean of its divisors is an integer number (32870958).

Almost surely, 2^131243351 is an apocalyptic number.

131243351 is a deficient number, since it is larger than the sum of its proper divisors (240481).

131243351 is an equidigital number, since it uses as much as digits as its factorization.

131243351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240480.

The product of its digits is 1080, while the sum is 23.

The square root of 131243351 is about 11456.1490475639. The cubic root of 131243351 is about 508.1895966506.

Adding to 131243351 its reverse (153342131), we get a palindrome (284585482).

The spelling of 131243351 in words is "one hundred thirty-one million, two hundred forty-three thousand, three hundred fifty-one".