2831965 has 4 divisors (see below), whose sum is σ = 3398364. Its totient is φ = 2265568.

The previous prime is 2831953. The next prime is 2831971. The reversal of 2831965 is 5691382.

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 1996569 + 835396 = 1413^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2831965 - 2¹³ = 2823773 is a prime.

It is a super-2 number, since 2×2831965² = 16040051522450, which contains 22 as substring.

It is a Duffinian number.

2831965 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2831965.

It is a congruent number.

It is an unprimeable number.

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, 283192 + ... + 283201.

It is an arithmetic number, because the mean of its divisors is an integer number (849591).

2^2831965 is an apocalyptic number.

It is an amenable number.

2831965 is a deficient number, since it is larger than the sum of its proper divisors (566399).

2831965 is an equidigital number, since it uses as much as digits as its factorization.

2831965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566398.

The product of its digits is 12960, while the sum is 34.

The square root of 2831965 is about 1682.8443184086. The cubic root of 2831965 is about 141.4802962571.

The spelling of 2831965 in words is "two million, eight hundred thirty-one thousand, nine hundred sixty-five".