3140281 has 4 divisors (see below), whose sum is σ = 3144064. Its totient is φ = 3136500.

The previous prime is 3140273. The next prime is 3140297. The reversal of 3140281 is 1820413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3140281 - 2³ = 3140273 is a prime.

It is a super-2 number, since 2×3140281² = 19722729517922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3140251) 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, 45 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (786016).

Almost surely, 2^3140281 is an apocalyptic number.

3140281 is the 793-rd centered decagonal number.

It is an amenable number.

3140281 is a deficient number, since it is larger than the sum of its proper divisors (3783).

3140281 is a wasteful number, since it uses less digits than its factorization.

3140281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 3140281 is about 1772.0838016302. The cubic root of 3140281 is about 146.4388030810.

Adding to 3140281 its reverse (1820413), we get a palindrome (4960694).

The spelling of 3140281 in words is "three million, one hundred forty thousand, two hundred eighty-one".