131029985 has 8 divisors (see below), whose sum is σ = 165511680. Its totient is φ = 99306864.

The previous prime is 131029967. The next prime is 131029993. The reversal of 131029985 is 589920131.

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 131029985 - 2¹⁴ = 131013601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689537 + ... + 689726.

It is an arithmetic number, because the mean of its divisors is an integer number (20688960).

Almost surely, 2^131029985 is an apocalyptic number.

It is an amenable number.

131029985 is a deficient number, since it is larger than the sum of its proper divisors (34481695).

131029985 is a wasteful number, since it uses less digits than its factorization.

131029985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379287.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 131029985 is about 11446.8329681183. The cubic root of 131029985 is about 507.9140545800.

The spelling of 131029985 in words is "one hundred thirty-one million, twenty-nine thousand, nine hundred eighty-five".