1823431 has 2 divisors, whose sum is σ = 1823432. Its totient is φ = 1823430.

The previous prime is 1823429. The next prime is 1823443. The reversal of 1823431 is 1343281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1823431 - 2¹ = 1823429 is a prime.

It is a super-2 number, since 2×1823431² = 6649801223522, which contains 22 as substring.

Together with 1823429, it forms a pair of twin primes.

1823431 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1823401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911715 + 911716.

It is an arithmetic number, because the mean of its divisors is an integer number (911716).

2^1823431 is an apocalyptic number.

1823431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1823431 is an equidigital number, since it uses as much as digits as its factorization.

1823431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 1823431 is about 1350.3447707900. The cubic root of 1823431 is about 122.1695885707.

The spelling of 1823431 in words is "one million, eight hundred twenty-three thousand, four hundred thirty-one".