387205131 has 8 divisors (see below), whose sum is σ = 516365200. Its totient is φ = 258090912.

The previous prime is 387205099. The next prime is 387205139. The reversal of 387205131 is 131502783.

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

It is not a de Polignac number, because 387205131 - 2⁵ = 387205099 is a prime.

It is a super-2 number, since 2×387205131² = 299855626945454322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387205139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23361 + ... + 36333.

It is an arithmetic number, because the mean of its divisors is an integer number (64545650).

Almost surely, 2^387205131 is an apocalyptic number.

387205131 is a deficient number, since it is larger than the sum of its proper divisors (129160069).

387205131 is a wasteful number, since it uses less digits than its factorization.

387205131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22925.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 387205131 is about 19677.5285795752. The cubic root of 387205131 is about 728.8648969396.

The spelling of 387205131 in words is "three hundred eighty-seven million, two hundred five thousand, one hundred thirty-one".