131152247 has 4 divisors (see below), whose sum is σ = 131230176. Its totient is φ = 131074320.

The previous prime is 131152223. The next prime is 131152249. The reversal of 131152247 is 742251131.

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 131152247 - 2⁶ = 131152183 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 (131152249) 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, 36383 + ... + 39824.

It is an arithmetic number, because the mean of its divisors is an integer number (32807544).

Almost surely, 2^131152247 is an apocalyptic number.

131152247 is a deficient number, since it is larger than the sum of its proper divisors (77929).

131152247 is an equidigital number, since it uses as much as digits as its factorization.

131152247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77928.

The product of its digits is 1680, while the sum is 26.

The square root of 131152247 is about 11452.1721520417. The cubic root of 131152247 is about 508.0719809858.

The spelling of 131152247 in words is "one hundred thirty-one million, one hundred fifty-two thousand, two hundred forty-seven".