131264243 has 8 divisors (see below), whose sum is σ = 149423616. Its totient is φ = 114142600.

The previous prime is 131264239. The next prime is 131264249. The reversal of 131264243 is 342462131.

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

It is not a de Polignac number, because 131264243 - 2² = 131264239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131264249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259163 + ... + 259668.

It is an arithmetic number, because the mean of its divisors is an integer number (18677952).

Almost surely, 2^131264243 is an apocalyptic number.

131264243 is a deficient number, since it is larger than the sum of its proper divisors (18159373).

131264243 is a wasteful number, since it uses less digits than its factorization.

131264243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518865.

The product of its digits is 3456, while the sum is 26.

The square root of 131264243 is about 11457.0608360085. The cubic root of 131264243 is about 508.2165606419.

The spelling of 131264243 in words is "one hundred thirty-one million, two hundred sixty-four thousand, two hundred forty-three".