1831223 has 4 divisors (see below), whose sum is σ = 1938960. Its totient is φ = 1723488.

The previous prime is 1831211. The next prime is 1831243. The reversal of 1831223 is 3221381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221381 = 17 ⋅189493.

It is a cyclic number.

It is not a de Polignac number, because 1831223 - 2⁸ = 1830967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1831195 and 1831204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831243) 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, 53843 + ... + 53876.

It is an arithmetic number, because the mean of its divisors is an integer number (484740).

2^1831223 is an apocalyptic number.

1831223 is a deficient number, since it is larger than the sum of its proper divisors (107737).

1831223 is a wasteful number, since it uses less digits than its factorization.

1831223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107736.

The product of its digits is 288, while the sum is 20.

The square root of 1831223 is about 1353.2268841551. The cubic root of 1831223 is about 122.3433622009.

The spelling of 1831223 in words is "one million, eight hundred thirty-one thousand, two hundred twenty-three".