1387328271 has 8 divisors (see below), whose sum is σ = 2114024064. Its totient is φ = 792759000.

The previous prime is 1387328251. The next prime is 1387328287. The reversal of 1387328271 is 1728237831.

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

It is not a de Polignac number, because 1387328271 - 2⁶ = 1387328207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387328251) 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, 33031605 + ... + 33031646.

It is an arithmetic number, because the mean of its divisors is an integer number (264253008).

Almost surely, 2^1387328271 is an apocalyptic number.

1387328271 is a deficient number, since it is larger than the sum of its proper divisors (726695793).

1387328271 is an equidigital number, since it uses as much as digits as its factorization.

1387328271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66063261.

The product of its digits is 112896, while the sum is 42.

The square root of 1387328271 is about 37246.8558538838. The cubic root of 1387328271 is about 1115.3035352370.

The spelling of 1387328271 in words is "one billion, three hundred eighty-seven million, three hundred twenty-eight thousand, two hundred seventy-one".