131350643 has 4 divisors (see below), whose sum is σ = 131408280. Its totient is φ = 131293008.

The previous prime is 131350633. The next prime is 131350649. The reversal of 131350643 is 346053131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346053131 = 1213 ⋅285287.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131350643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131350649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25253 + ... + 30006.

It is an arithmetic number, because the mean of its divisors is an integer number (32852070).

Almost surely, 2^131350643 is an apocalyptic number.

131350643 is a deficient number, since it is larger than the sum of its proper divisors (57637).

131350643 is an equidigital number, since it uses as much as digits as its factorization.

131350643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57636.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 131350643 is about 11460.8308163065. The cubic root of 131350643 is about 508.3280413197.

The spelling of 131350643 in words is "one hundred thirty-one million, three hundred fifty thousand, six hundred forty-three".