2861123 has 4 divisors (see below), whose sum is σ = 2864640. Its totient is φ = 2857608.

The previous prime is 2861119. The next prime is 2861129. The reversal of 2861123 is 3211682.

It is a semiprime because it is the product of two primes, 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 2861123 - 2² = 2861119 is a prime.

It is a super-2 number, since 2×2861123² = 16372049642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861129) 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, 161 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (716160).

2^2861123 is an apocalyptic number.

2861123 is a deficient number, since it is larger than the sum of its proper divisors (3517).

2861123 is a wasteful number, since it uses less digits than its factorization.

2861123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516.

The product of its digits is 576, while the sum is 23.

The square root of 2861123 is about 1691.4854418528. The cubic root of 2861123 is about 141.9642011192.

The spelling of 2861123 in words is "two million, eight hundred sixty-one thousand, one hundred twenty-three".