3140381 has 4 divisors (see below), whose sum is σ = 3248700. Its totient is φ = 3032064.

The previous prime is 3140369. The next prime is 3140407. The reversal of 3140381 is 1830413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 2402500 = 859^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140381 - 2⁶ = 3140317 is a prime.

It is a super-2 number, since 2×3140381² = 19723985650322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3140321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54116 + ... + 54173.

It is an arithmetic number, because the mean of its divisors is an integer number (812175).

Almost surely, 2^3140381 is an apocalyptic number.

It is an amenable number.

3140381 is a deficient number, since it is larger than the sum of its proper divisors (108319).

3140381 is a wasteful number, since it uses less digits than its factorization.

3140381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108318.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3140381 is about 1772.1120167755. The cubic root of 3140381 is about 146.4403574774.

Adding to 3140381 its reverse (1830413), we get a palindrome (4970794).

The spelling of 3140381 in words is "three million, one hundred forty thousand, three hundred eighty-one".