131857006 has 8 divisors (see below), whose sum is σ = 202385304. Its totient is φ = 64395240.

The previous prime is 131856889. The next prime is 131857007. The reversal of 131857006 is 600758131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131857007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766525 + ... + 766696.

It is an arithmetic number, because the mean of its divisors is an integer number (25298163).

Almost surely, 2^131857006 is an apocalyptic number.

131857006 is a deficient number, since it is larger than the sum of its proper divisors (70528298).

131857006 is a wasteful number, since it uses less digits than its factorization.

131857006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533266.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 131857006 is about 11482.9005917495. The cubic root of 131857006 is about 508.9804133510.

The spelling of 131857006 in words is "one hundred thirty-one million, eight hundred fifty-seven thousand, six".