2071391 has 8 divisors (see below), whose sum is σ = 2380800. Its totient is φ = 1765368.

The previous prime is 2071379. The next prime is 2071393. The reversal of 2071391 is 1931702.

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-2071391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071393) 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, 650 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (297600).

2^2071391 is an apocalyptic number.

2071391 is a deficient number, since it is larger than the sum of its proper divisors (309409).

2071391 is a wasteful number, since it uses less digits than its factorization.

2071391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2071391 is about 1439.2327817278. The cubic root of 2071391 is about 127.4737303305.

The spelling of 2071391 in words is "two million, seventy-one thousand, three hundred ninety-one".