283140349 has 4 divisors (see below), whose sum is σ = 283779936. Its totient is φ = 282500764.

The previous prime is 283140331. The next prime is 283140397. The reversal of 283140349 is 943041382.

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 an emirpimes, since its reverse is a distinct semiprime: 943041382 = 2 ⋅471520691.

It is a cyclic number.

It is not a de Polignac number, because 283140349 - 2²⁷ = 148922621 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 (283140449) 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 3 ways as a sum of consecutive naturals, for example, 319129 + ... + 320014.

It is an arithmetic number, because the mean of its divisors is an integer number (70944984).

Almost surely, 2^283140349 is an apocalyptic number.

It is an amenable number.

283140349 is a deficient number, since it is larger than the sum of its proper divisors (639587).

283140349 is an equidigital number, since it uses as much as digits as its factorization.

283140349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639586.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 283140349 is about 16826.7747652365. The cubic root of 283140349 is about 656.6499582901.

The spelling of 283140349 in words is "two hundred eighty-three million, one hundred forty thousand, three hundred forty-nine".