2814381 has 6 divisors (see below), whose sum is σ = 4065230. Its totient is φ = 1876248.

The previous prime is 2814347. The next prime is 2814389. The reversal of 2814381 is 1834182.

2814381 is a `hidden beast` number, since 281 + 4 + 381 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 826281 = 1410^2 + 909^2 .

It is not a de Polignac number, because 2814381 - 2²¹ = 717229 is a prime.

It is a super-2 number, since 2×2814381² = 15841480826322, which contains 22 as substring.

It is a Duffinian number.

2814381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2814389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156346 + ... + 156363.

2^2814381 is an apocalyptic number.

It is an amenable number.

2814381 is a deficient number, since it is larger than the sum of its proper divisors (1250849).

2814381 is a wasteful number, since it uses less digits than its factorization.

2814381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312715 (or 312712 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 2814381 is about 1677.6116952382. The cubic root of 2814381 is about 141.1868655642.

It can be divided in two parts, 28143 and 81, that added together give a square (28224 = 168²).

The spelling of 2814381 in words is "two million, eight hundred fourteen thousand, three hundred eighty-one".