1381071 has 8 divisors (see below), whose sum is σ = 1869184. Its totient is φ = 906840.

The previous prime is 1381069. The next prime is 1381103. The reversal of 1381071 is 1701831.

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

It is not a de Polignac number, because 1381071 - 2¹ = 1381069 is a prime.

It is a Duffinian number.

1381071 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381271) 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, 3235 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (233648).

2^1381071 is an apocalyptic number.

1381071 is a deficient number, since it is larger than the sum of its proper divisors (488113).

1381071 is an equidigital number, since it uses as much as digits as its factorization.

1381071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1381071 is about 1175.1897719092. The cubic root of 1381071 is about 111.3624222300.

The spelling of 1381071 in words is "one million, three hundred eighty-one thousand, seventy-one".