131506213 has 8 divisors (see below), whose sum is σ = 136493280. Its totient is φ = 126549360.

The previous prime is 131506189. The next prime is 131506223. The reversal of 131506213 is 312605131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131506213 - 2⁵ = 131506181 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 (131506223) 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 7 ways as a sum of consecutive naturals, for example, 1518 + ... + 16288.

It is an arithmetic number, because the mean of its divisors is an integer number (17061660).

Almost surely, 2^131506213 is an apocalyptic number.

It is an amenable number.

131506213 is a deficient number, since it is larger than the sum of its proper divisors (4987067).

131506213 is a wasteful number, since it uses less digits than its factorization.

131506213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15107.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 131506213 is about 11467.6158376534. The cubic root of 131506213 is about 508.5286478576.

The spelling of 131506213 in words is "one hundred thirty-one million, five hundred six thousand, two hundred thirteen".