386331281 has 8 divisors (see below), whose sum is σ = 441653760. Its totient is φ = 331041888.

The previous prime is 386331271. The next prime is 386331329. The reversal of 386331281 is 182133683.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386331281 is a prime.

It is a super-2 number, since 2×386331281² = 298503717358201922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386331241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26525 + ... + 38421.

It is an arithmetic number, because the mean of its divisors is an integer number (55206720).

Almost surely, 2^386331281 is an apocalyptic number.

It is an amenable number.

386331281 is a deficient number, since it is larger than the sum of its proper divisors (55322479).

386331281 is a wasteful number, since it uses less digits than its factorization.

386331281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16543.

The product of its digits is 20736, while the sum is 35.

The square root of 386331281 is about 19655.3117757007. The cubic root of 386331281 is about 728.3161797556.

The spelling of 386331281 in words is "three hundred eighty-six million, three hundred thirty-one thousand, two hundred eighty-one".