1814431 has 2 divisors, whose sum is σ = 1814432. Its totient is φ = 1814430.

The previous prime is 1814429. The next prime is 1814453. The reversal of 1814431 is 1344181.

It is an a-pointer prime, because the next prime (1814453) can be obtained adding 1814431 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (1344181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1814431 - 2¹ = 1814429 is a prime.

It is a super-2 number, since 2×1814431² = 6584319707522, which contains 22 as substring.

Together with 1814429, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1814531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 907215 + 907216.

It is an arithmetic number, because the mean of its divisors is an integer number (907216).

2^1814431 is an apocalyptic number.

1814431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1814431 is an equidigital number, since it uses as much as digits as its factorization.

1814431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

The square root of 1814431 is about 1347.0081662707. The cubic root of 1814431 is about 121.9682574410.

Subtracting from 1814431 its sum of digits (22), we obtain a square (1814409 = 1347²).

It can be divided in two parts, 181 and 4431, that multiplied together give a triangular number (802011 = T₁₂₆₆).

The spelling of 1814431 in words is "one million, eight hundred fourteen thousand, four hundred thirty-one".