2147723 has 4 divisors (see below), whose sum is σ = 2151240. Its totient is φ = 2144208.

The previous prime is 2147699. The next prime is 2147731. The reversal of 2147723 is 3277412.

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 2147723 - 2¹² = 2143627 is a prime.

It is a super-2 number, since 2×2147723² = 9225428169458, 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 = 2147692 and 2147701.

It is not an unprimeable number, because it can be changed into a prime (2147753) 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, 578 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (537810).

2^2147723 is an apocalyptic number.

2147723 is a deficient number, since it is larger than the sum of its proper divisors (3517).

2147723 is an equidigital number, since it uses as much as digits as its factorization.

2147723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516.

The product of its digits is 2352, while the sum is 26.

The square root of 2147723 is about 1465.5111736183. The cubic root of 2147723 is about 129.0207085718.

The spelling of 2147723 in words is "two million, one hundred forty-seven thousand, seven hundred twenty-three".