2231723 has 4 divisors (see below), whose sum is σ = 2403408. Its totient is φ = 2060040.

The previous prime is 2231717. The next prime is 2231731. The reversal of 2231723 is 3271322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3271322 = 2 ⋅1635661.

It is a cyclic number.

It is not a de Polignac number, because 2231723 - 2⁴ = 2231707 is a prime.

It is a super-3 number, since 3×2231723³ = 33345875358036390201, which contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231695 and 2231704.

It is not an unprimeable number, because it can be changed into a prime (2231773) 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, 85823 + ... + 85848.

It is an arithmetic number, because the mean of its divisors is an integer number (600852).

2^2231723 is an apocalyptic number.

2231723 is a deficient number, since it is larger than the sum of its proper divisors (171685).

2231723 is a wasteful number, since it uses less digits than its factorization.

2231723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171684.

The product of its digits is 504, while the sum is 20.

The square root of 2231723 is about 1493.8952439847. The cubic root of 2231723 is about 130.6812950731.

The spelling of 2231723 in words is "two million, two hundred thirty-one thousand, seven hundred twenty-three".