2789131 has 4 divisors (see below), whose sum is σ = 2808000. Its totient is φ = 2770264.

The previous prime is 2789123. The next prime is 2789161. The reversal of 2789131 is 1319872.

2789131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2789131 - 2³ = 2789123 is a prime.

It is a super-2 number, since 2×2789131² = 15558503470322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2789093 and 2789102.

It is not an unprimeable number, because it can be changed into a prime (2789161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9211 + ... + 9508.

It is an arithmetic number, because the mean of its divisors is an integer number (702000).

2^2789131 is an apocalyptic number.

2789131 is a deficient number, since it is larger than the sum of its proper divisors (18869).

2789131 is a wasteful number, since it uses less digits than its factorization.

2789131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18868.

The product of its digits is 3024, while the sum is 31.

The square root of 2789131 is about 1670.0691602446. The cubic root of 2789131 is about 140.7633641285.

It can be divided in two parts, 278 and 9131, that added together give a square (9409 = 97²).

The spelling of 2789131 in words is "two million, seven hundred eighty-nine thousand, one hundred thirty-one".