386131393 has 4 divisors (see below), whose sum is σ = 386170708. Its totient is φ = 386092080.

The previous prime is 386131391. The next prime is 386131411. The reversal of 386131393 is 393131683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 330076224 + 56055169 = 18168^2 + 7487^2 .

It is a cyclic number.

It is not a de Polignac number, because 386131393 - 2¹ = 386131391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386131391) 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, 9055 + ... + 29227.

It is an arithmetic number, because the mean of its divisors is an integer number (96542677).

Almost surely, 2^386131393 is an apocalyptic number.

It is an amenable number.

386131393 is a deficient number, since it is larger than the sum of its proper divisors (39315).

386131393 is a wasteful number, since it uses less digits than its factorization.

386131393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39314.

The product of its digits is 34992, while the sum is 37.

The square root of 386131393 is about 19650.2262836844. The cubic root of 386131393 is about 728.1905476992.

The spelling of 386131393 in words is "three hundred eighty-six million, one hundred thirty-one thousand, three hundred ninety-three".