3105723 has 4 divisors (see below), whose sum is σ = 4140968. Its totient is φ = 2070480.

The previous prime is 3105719. The next prime is 3105749. The reversal of 3105723 is 3275013.

It is a happy number.

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

It is not a de Polignac number, because 3105723 - 2² = 3105719 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3105723.

It is not an unprimeable number, because it can be changed into a prime (3105703) 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, 517618 + ... + 517623.

It is an arithmetic number, because the mean of its divisors is an integer number (1035242).

Almost surely, 2^3105723 is an apocalyptic number.

3105723 is a deficient number, since it is larger than the sum of its proper divisors (1035245).

3105723 is a wasteful number, since it uses less digits than its factorization.

3105723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035244.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 3105723 is about 1762.3061595534. The cubic root of 3105723 is about 145.8996464312.

It can be divided in two parts, 3105 and 723, that added together give a triangular number (3828 = T₈₇).

The spelling of 3105723 in words is "three million, one hundred five thousand, seven hundred twenty-three".